Sunspot Band6 Calibration for CASA 6.5.4: Difference between revisions

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This process takes long time, about one night or day.
This process takes a long time, about one night or day.
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Revision as of 23:24, 3 April 2024

Last checked on CASA Version 6.5.4

Getting Started

Details of these ALMA observations are provided at Sunspot_Band6. This portion of the guide will cover the calibration of the raw visibility data.

WARNING: The command in the #Tsys+Tant calibration of the Sun section of this guide takes a long time to run, about one night or day.

Download and Unpack the Data

To follow this guide you must download the file Sunspot_Band6_UncalibratedData.tgz from Sunspot_Band6#Obtaining the Data.

Unpack and cd to the directory:

#In bash
tar -xvzf Sunspot_Band6_UncalibratedData.tgz
cd Sunspot_Band6_UncalibratedData

Confirm your version of CASA

This guide has been written for CASA release 6.5. Start CASA and confirm your version before proceeding.

# In CASA
from casatools import version
vernum = str(version()[0])+'.'+str(version()[1])
print("You are using CASA ver. "+vernum)
if float(vernum) < 6.5:
 print("YOUR VERSION OF CASA IS TOO OLD FOR THIS GUIDE.")
 print("PLEASE UPDATE IT BEFORE PROCEEDING.")
else:
 print("Your version of CASA is appropriate for this guide.")

Import Tools and Scripts

The "Analysis Utilities" package must be used for the calibration of raw solar visibility data. Therefore, before starting the tutorial, you need to import the package to your data-analysis environment. The documents and software of the package can be obtained from the Analysis_Utilities guide.

We also need script to download the script Sun_reduction_util_6.5.4.py and execute it inside our CASA session.

#In CASA
import analysisUtils as aU
es = aU.stuffForScienceDataReduction() 
execfile('Sun_reduction_util_6.5.4.py')

Initial Inspection

Import the Data into CASA

We start by defining the directory name of the ASDM and some directory names of the Measurement Sets (MS) for the calibration.

#In CASA
asdm ='uid___A002_Xae00c5_X2a8d' 
mso = asdm + '.ms'           #MS original
mss = asdm + '.ms.split'     #MS split
msc = asdm + '.ms.split.cal' #MS calibrated

The raw data have been provided to you in the ASDM format. It is the native format of the data produced by the ALMA observatory.

Before we can proceed to the calibration, we will need to convert those data to the CASA MS format. This is done simply with the task importasdm.

#In CASA
importasdm(asdm=asdm, vis=mso, asis='Antenna Station Receiver Source CalAtmosphere CalWVR CorrelatorMode SBSummary CalDevice')

To fix the bug in the SYSCAL table times, the following commands are executed.

#In CASA
from casarecipes.almahelpers import fixsyscaltimes
fixsyscaltimes(vis=mso)

Inspect the Data

The usual first step is then to get some basic information about the data. We do this using the task listobs, which will output a detailed summary of each dataset supplied.

#In CASA
listobs(mso, listfile=asdm+'.listobs.txt')

The output will be sent to the CASA logger, or saved in a text file.

  • The first section shows information about the project and observing time:
   Observer: shimojo     Project: uid://A002/Xac494e/X3  
Observation: ALMA
Data records: 20923884       Total elapsed time = 3184.8 seconds
   Observed from   18-Dec-2015/19:15:42.3   to   18-Dec-2015/20:08:47.1 (UTC)

Scan List

  • The second section describes details of each scan. This is often easier to read in a text viewer with line wrapping turned off. We see that our Fields have the following associated intents:
    • Field 0 = Sun: observed for the measurement of zero-signal level [scan 1] and the calibration of atmosphere [scans 10,13,16]. Scientific observations of the Sun (Target) [scans 11,14,17] are listed many times, which represent a mosaic.
    • Field 1 = J1924-2914: observed for the calibrations of pointing [scan 2], sideband ratio [scan 3], atmosphere [scan 4], and bandpass [scan 5]
    • Field 2 = nrao530: observed for the calibration of pointing [scan 6], atmosphere [scan 7], flux [scan 8], and phase [scans 9,12,15,18]
   ObservationID = 0         ArrayID = 0
  Date        Timerange (UTC)          Scan  FldId FieldName             nRows     SpwIds   Average Interval(s)    ScanIntent
  18-Dec-2015/19:15:42.3 - 19:16:47.5     1      0 Sun                     236530  [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.016, 0.016, 0.016, 0.016, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_ATMOSPHERE#REFERENCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE,CALIBRATE_WVR#REFERENCE]
              19:17:31.8 - 19:19:26.4     2      1 J1924-2914             1081497  [4,25,26,27,28,29,30,31,32,33,34,35,36]  [1.15, 0.016, 0.016, 0.016, 0.016, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_POINTING#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:20:14.2 - 19:21:17.7     3      1 J1924-2914              895435  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_SIDEBAND_RATIO#IMAGE,CALIBRATE_SIDEBAND_RATIO#SIGNAL,CALIBRATE_WVR#IMAGE,CALIBRATE_WVR#SIGNAL]
              19:22:06.0 - 19:22:23.1     4      1 J1924-2914              177382  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE]
              19:23:11.6 - 19:28:27.9     5      1 J1924-2914             3244522  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_BANDPASS#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:29:14.5 - 19:31:09.2     6      2 nrao530                1081528  [4,25,26,27,28,29,30,31,32,33,34,35,36]  [1.15, 0.016, 0.016, 0.016, 0.016, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_POINTING#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:31:54.6 - 19:32:11.4     7      2 nrao530                 177413  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE]
              19:32:59.1 - 19:35:36.6     8      2 nrao530                1622261  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_FLUX#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:36:21.9 - 19:36:52.1     9      2 nrao530                 324446  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_PHASE#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:37:41.4 - 19:37:57.8    10      0 Sun                     177413  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE]
              19:39:23.9 - 19:49:36.0    11      0 Sun                    3760610  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#OFF_SOURCE,CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#OFF_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      3 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      4 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      5 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      6 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      7 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      8 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11      9 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     10 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     11 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     12 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     13 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     14 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     15 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     16 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     17 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     18 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     19 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     20 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     21 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     22 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     23 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     24 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     25 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     26 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     27 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     28 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     29 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     30 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     31 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     32 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     33 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     34 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     35 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     36 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     37 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     38 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     39 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     40 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     41 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     42 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     43 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     44 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     45 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     46 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     47 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     48 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     49 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     50 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     51 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     52 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     53 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     54 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     55 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     56 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     57 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     58 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     59 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     60 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     61 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     62 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     63 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     64 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     65 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     66 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     67 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     68 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     69 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     70 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     71 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     72 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     73 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     74 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     75 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     76 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     77 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     78 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:39:23.9 - 19:49:36.0    11     79 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:50:21.7 - 19:50:52.0    12      2 nrao530                 324446  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_PHASE#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              19:51:41.2 - 19:51:58.0    13      0 Sun                     177413  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE]
              19:53:26.0 - 20:03:37.0    14      0 Sun                    3742537  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#OFF_SOURCE,CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#OFF_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      3 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      4 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      5 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      6 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      7 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      8 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14      9 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     80 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     81 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     82 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     83 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     84 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     85 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     86 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     87 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     88 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     89 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     90 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     91 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     92 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     93 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     94 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     95 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     96 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     97 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     98 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14     99 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    100 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    101 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    102 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    103 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    104 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    105 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    106 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    107 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    108 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    109 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    110 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    111 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    112 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    113 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    114 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    115 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    116 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    117 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    118 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    119 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    120 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    121 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    122 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    123 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    124 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    125 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    126 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    127 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    128 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    129 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    130 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    131 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    132 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    133 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    134 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    135 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    136 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    137 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    138 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    139 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    140 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    141 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    142 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    143 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    144 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    145 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    146 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    147 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    148 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    149 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              19:53:26.0 - 20:03:37.0    14    150 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              20:04:22.7 - 20:04:53.7    15      2 nrao530                 324446  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_PHASE#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
              20:05:43.3 - 20:06:00.2    16      0 Sun                     177413  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576, 0.576] [CALIBRATE_ATMOSPHERE#AMBIENT,CALIBRATE_ATMOSPHERE#HOT,CALIBRATE_ATMOSPHERE#OFF_SOURCE,CALIBRATE_WVR#AMBIENT,CALIBRATE_WVR#HOT,CALIBRATE_WVR#OFF_SOURCE]
              20:06:47.8 - 20:07:30.5    17      0 Sun                     227168  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#OFF_SOURCE,CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#OFF_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              20:06:47.8 - 20:07:30.5    17     10 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              20:06:47.8 - 20:07:30.5    17     11 Sun                      18042  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              20:06:47.8 - 20:07:30.5    17     12 Sun                      18011  [4,5,6,7,8,9,10,11,12]  [1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_WVR#ON_SOURCE,OBSERVE_TARGET#ON_SOURCE]
              20:08:16.5 - 20:08:47.1    18      2 nrao530                 324446  [0,1,2,3,4,5,6,7,8,9,10,11,12]  [0.016, 0.016, 0.016, 0.016, 1.15, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01, 2.02, 1.01] [CALIBRATE_PHASE#ON_SOURCE,CALIBRATE_WVR#ON_SOURCE]
           (nRows = Total number of rows per scan) 

Field List

  • The third section shows the information of the observing targets. This shows that three Sources with 151 Fields were observed: The Sun, J1924-2914, and nrao530 (J1733-1304). The Sun as one Source has many Fields - this is how a mosaic is represented:
Fields: 151
  ID   Code Name                RA               Decl           Epoch   SrcId      nRows
  0    none Sun                 17:44:04.359217 -23.19.29.92535 ICRS    0        8499084
  1    none J1924-2914          19:24:51.055957 -29.14.30.12103 ICRS    1        5398836
  2    none nrao530             17:33:02.705760 -13.04.49.54800 ICRS    2        4178986
  3    none Sun                 17:44:03.784899 -23.20.37.96258 ICRS    0          36022
  4    none Sun                 17:44:04.746002 -23.20.37.96880 ICRS    0          36053
  5    none Sun                 17:44:05.707104 -23.20.37.97466 ICRS    0          36053
  6    none Sun                 17:44:06.668207 -23.20.37.98018 ICRS    0          36053
  7    none Sun                 17:44:07.629310 -23.20.37.98535 ICRS    0          36053
  8    none Sun                 17:44:08.590412 -23.20.37.99016 ICRS    0          36022
  9    none Sun                 17:44:09.551515 -23.20.37.99463 ICRS    0          36022
  10   none Sun                 17:44:10.512617 -23.20.37.99875 ICRS    0          36022
  11   none Sun                 17:44:11.473720 -23.20.38.00251 ICRS    0          36053
  12   none Sun                 17:44:12.434823 -23.20.38.00593 ICRS    0          36053
  13   none Sun                 17:44:13.395926 -23.20.38.00900 ICRS    0          18011
  14   none Sun                 17:44:03.555941 -23.20.26.81043 ICRS    0          18011
  15   none Sun                 17:44:04.517022 -23.20.26.81682 ICRS    0          18011
  16   none Sun                 17:44:05.478102 -23.20.26.82286 ICRS    0          18011
  17   none Sun                 17:44:06.439183 -23.20.26.82855 ICRS    0          18042
  18   none Sun                 17:44:07.400264 -23.20.26.83389 ICRS    0          18011
  19   none Sun                 17:44:08.361345 -23.20.26.83888 ICRS    0          18042
  20   none Sun                 17:44:09.322425 -23.20.26.84352 ICRS    0          18011
  21   none Sun                 17:44:10.283506 -23.20.26.84781 ICRS    0          18011
  22   none Sun                 17:44:11.244587 -23.20.26.85175 ICRS    0          18011
  23   none Sun                 17:44:12.205668 -23.20.26.85534 ICRS    0          18011
  24   none Sun                 17:44:13.166748 -23.20.26.85858 ICRS    0          18042
  25   none Sun                 17:44:14.127829 -23.20.26.86147 ICRS    0          18011
  26   none Sun                 17:44:04.288064 -23.20.15.66473 ICRS    0          18011
  27   none Sun                 17:44:05.249123 -23.20.15.67095 ICRS    0          18011
  28   none Sun                 17:44:06.210181 -23.20.15.67681 ICRS    0          18011
  29   none Sun                 17:44:07.171240 -23.20.15.68232 ICRS    0          18042
  30   none Sun                 17:44:08.132299 -23.20.15.68749 ICRS    0          18011
  31   none Sun                 17:44:09.093358 -23.20.15.69230 ICRS    0          18042
  32   none Sun                 17:44:10.054417 -23.20.15.69676 ICRS    0          18011
  33   none Sun                 17:44:11.015475 -23.20.15.70087 ICRS    0          18011
  34   none Sun                 17:44:11.976534 -23.20.15.70464 ICRS    0          18011
  35   none Sun                 17:44:12.937593 -23.20.15.70805 ICRS    0          18011
  36   none Sun                 17:44:13.898652 -23.20.15.71111 ICRS    0          18042
  37   none Sun                 17:44:04.059128 -23.20.04.51254 ICRS    0          18011
  38   none Sun                 17:44:05.020164 -23.20.04.51893 ICRS    0          18011
  39   none Sun                 17:44:05.981201 -23.20.04.52496 ICRS    0          18011
  40   none Sun                 17:44:06.942238 -23.20.04.53065 ICRS    0          18011
  41   none Sun                 17:44:07.903275 -23.20.04.53598 ICRS    0          18042
  42   none Sun                 17:44:08.864312 -23.20.04.54097 ICRS    0          18011
  43   none Sun                 17:44:09.825349 -23.20.04.54560 ICRS    0          18042
  44   none Sun                 17:44:10.786386 -23.20.04.54989 ICRS    0          18011
  45   none Sun                 17:44:11.747423 -23.20.04.55382 ICRS    0          18011
  46   none Sun                 17:44:12.708460 -23.20.04.55741 ICRS    0          18011
  47   none Sun                 17:44:13.669497 -23.20.04.56064 ICRS    0          18011
  48   none Sun                 17:44:14.630534 -23.20.04.56353 ICRS    0          18042
  49   none Sun                 17:44:04.791228 -23.19.53.36679 ICRS    0          18011
  50   none Sun                 17:44:05.752243 -23.19.53.37300 ICRS    0          18011
  51   none Sun                 17:44:06.713258 -23.19.53.37886 ICRS    0          18011
  52   none Sun                 17:44:07.674273 -23.19.53.38437 ICRS    0          18011
  53   none Sun                 17:44:08.635288 -23.19.53.38953 ICRS    0          18042
  54   none Sun                 17:44:09.596303 -23.19.53.39433 ICRS    0          18011
  55   none Sun                 17:44:10.557318 -23.19.53.39879 ICRS    0          18042
  56   none Sun                 17:44:11.518333 -23.19.53.40290 ICRS    0          18011
  57   none Sun                 17:44:12.479348 -23.19.53.40666 ICRS    0          18011
  58   none Sun                 17:44:13.440364 -23.19.53.41007 ICRS    0          18011
  59   none Sun                 17:44:14.401379 -23.19.53.41312 ICRS    0          18011
  60   none Sun                 17:44:04.562314 -23.19.42.21455 ICRS    0          18042
  61   none Sun                 17:44:05.523307 -23.19.42.22093 ICRS    0          18011
  62   none Sun                 17:44:06.484300 -23.19.42.22696 ICRS    0          18011
  63   none Sun                 17:44:07.445293 -23.19.42.23264 ICRS    0          18011
  64   none Sun                 17:44:08.406286 -23.19.42.23797 ICRS    0          18011
  65   none Sun                 17:44:09.367280 -23.19.42.24295 ICRS    0          18042
  66   none Sun                 17:44:10.328273 -23.19.42.24758 ICRS    0          18011
  67   none Sun                 17:44:11.289266 -23.19.42.25187 ICRS    0          18042
  68   none Sun                 17:44:12.250259 -23.19.42.25580 ICRS    0          18011
  69   none Sun                 17:44:13.211252 -23.19.42.25938 ICRS    0          18011
  70   none Sun                 17:44:14.172245 -23.19.42.26261 ICRS    0          18011
  71   none Sun                 17:44:15.133239 -23.19.42.26549 ICRS    0          18011
  72   none Sun                 17:44:05.294393 -23.19.31.06875 ICRS    0          18042
  73   none Sun                 17:44:06.255364 -23.19.31.07495 ICRS    0          18011
  74   none Sun                 17:44:07.216335 -23.19.31.08081 ICRS    0          18011
  75   none Sun                 17:44:08.177306 -23.19.31.08631 ICRS    0          18011
  76   none Sun                 17:44:09.138278 -23.19.31.09146 ICRS    0          18011
  77   none Sun                 17:44:11.060220 -23.19.31.10072 ICRS    0          18011
  78   none Sun                 17:44:12.021191 -23.19.31.10482 ICRS    0          18042
  79   none Sun                 17:44:12.982163 -23.19.31.10858 ICRS    0          18011
  80   none Sun                 17:44:14.662815 -23.19.31.26419 ICRS    0          18042
  81   none Sun                 17:44:15.623787 -23.19.31.26724 ICRS    0          18011
  82   none Sun                 17:44:05.785179 -23.19.20.06866 ICRS    0          18042
  83   none Sun                 17:44:06.746129 -23.19.20.07503 ICRS    0          18011
  84   none Sun                 17:44:07.707078 -23.19.20.08105 ICRS    0          18011
  85   none Sun                 17:44:08.668028 -23.19.20.08672 ICRS    0          18011
  86   none Sun                 17:44:09.628977 -23.19.20.09204 ICRS    0          18011
  87   none Sun                 17:44:10.589927 -23.19.20.09701 ICRS    0          18042
  88   none Sun                 17:44:11.550877 -23.19.20.10163 ICRS    0          18011
  89   none Sun                 17:44:12.511827 -23.19.20.10590 ICRS    0          18011
  90   none Sun                 17:44:13.472776 -23.19.20.10982 ICRS    0          18011
  91   none Sun                 17:44:14.433726 -23.19.20.11339 ICRS    0          18011
  92   none Sun                 17:44:15.394676 -23.19.20.11661 ICRS    0          18042
  93   none Sun                 17:44:16.355625 -23.19.20.11948 ICRS    0          18011
  94   none Sun                 17:44:06.517236 -23.19.08.92273 ICRS    0          18042
  95   none Sun                 17:44:07.478164 -23.19.08.92892 ICRS    0          18011
  96   none Sun                 17:44:08.439092 -23.19.08.93476 ICRS    0          18011
  97   none Sun                 17:44:09.400019 -23.19.08.94026 ICRS    0          18011
  98   none Sun                 17:44:10.360947 -23.19.08.94540 ICRS    0          18011
  99   none Sun                 17:44:11.321875 -23.19.08.95019 ICRS    0          18042
  100  none Sun                 17:44:12.282803 -23.19.08.95464 ICRS    0          18011
  101  none Sun                 17:44:13.243731 -23.19.08.95873 ICRS    0          18011
  102  none Sun                 17:44:14.204658 -23.19.08.96247 ICRS    0          18011
  103  none Sun                 17:44:15.165586 -23.19.08.96587 ICRS    0          18011
  104  none Sun                 17:44:16.126514 -23.19.08.96891 ICRS    0          18042
  105  none Sun                 17:44:06.288366 -23.18.57.77032 ICRS    0          18011
  106  none Sun                 17:44:07.249271 -23.18.57.77669 ICRS    0          18042
  107  none Sun                 17:44:08.210177 -23.18.57.78270 ICRS    0          18011
  108  none Sun                 17:44:09.171083 -23.18.57.78837 ICRS    0          18011
  109  none Sun                 17:44:10.131989 -23.18.57.79368 ICRS    0          18011
  110  none Sun                 17:44:11.092895 -23.18.57.79865 ICRS    0          18011
  111  none Sun                 17:44:12.053801 -23.18.57.80326 ICRS    0          18042
  112  none Sun                 17:44:13.014707 -23.18.57.80753 ICRS    0          18011
  113  none Sun                 17:44:13.975613 -23.18.57.81145 ICRS    0          18011
  114  none Sun                 17:44:14.936519 -23.18.57.81501 ICRS    0          18011
  115  none Sun                 17:44:15.897425 -23.18.57.81823 ICRS    0          18011
  116  none Sun                 17:44:16.858331 -23.18.57.82110 ICRS    0          18042
  117  none Sun                 17:44:07.020401 -23.18.46.62434 ICRS    0          18011
  118  none Sun                 17:44:07.981285 -23.18.46.63053 ICRS    0          18042
  119  none Sun                 17:44:08.942169 -23.18.46.63637 ICRS    0          18011
  120  none Sun                 17:44:09.903053 -23.18.46.64185 ICRS    0          18011
  121  none Sun                 17:44:10.863937 -23.18.46.64699 ICRS    0          18011
  122  none Sun                 17:44:11.824821 -23.18.46.65178 ICRS    0          18011
  123  none Sun                 17:44:12.785705 -23.18.46.65622 ICRS    0          18042
  124  none Sun                 17:44:13.746589 -23.18.46.66031 ICRS    0          18011
  125  none Sun                 17:44:14.707473 -23.18.46.66405 ICRS    0          18011
  126  none Sun                 17:44:15.668357 -23.18.46.66744 ICRS    0          18011
  127  none Sun                 17:44:16.629241 -23.18.46.67048 ICRS    0          18011
  128  none Sun                 17:44:06.791552 -23.18.35.47189 ICRS    0          18042
  129  none Sun                 17:44:07.752414 -23.18.35.47825 ICRS    0          18011
  130  none Sun                 17:44:08.713276 -23.18.35.48426 ICRS    0          18042
  131  none Sun                 17:44:09.674116 -23.18.35.48972 ICRS    0          18011
  132  none Sun                 17:44:10.634936 -23.18.35.49465 ICRS    0          18011
  133  none Sun                 17:44:11.595756 -23.18.35.49924 ICRS    0          18011
  134  none Sun                 17:44:12.556576 -23.18.35.50347 ICRS    0          18011
  135  none Sun                 17:44:13.517396 -23.18.35.50736 ICRS    0          18042
  136  none Sun                 17:44:14.478216 -23.18.35.51089 ICRS    0          18011
  137  none Sun                 17:44:15.439036 -23.18.35.51408 ICRS    0          18011
  138  none Sun                 17:44:16.399856 -23.18.35.51691 ICRS    0          18011
  139  none Sun                 17:44:17.360676 -23.18.35.51940 ICRS    0          18011
  140  none Sun                 17:44:07.523164 -23.18.24.32227 ICRS    0          18042
  141  none Sun                 17:44:08.483962 -23.18.24.32807 ICRS    0          18011
  142  none Sun                 17:44:09.444760 -23.18.24.33353 ICRS    0          18042
  143  none Sun                 17:44:10.405558 -23.18.24.33864 ICRS    0          18011
  144  none Sun                 17:44:11.366356 -23.18.24.34339 ICRS    0          18011
  145  none Sun                 17:44:12.327154 -23.18.24.34780 ICRS    0          18011
  146  none Sun                 17:44:13.287952 -23.18.24.35186 ICRS    0          18011
  147  none Sun                 17:44:14.248750 -23.18.24.35557 ICRS    0          18042
  148  none Sun                 17:44:15.209549 -23.18.24.35893 ICRS    0          18011
  149  none Sun                 17:44:16.170347 -23.18.24.36194 ICRS    0          18011
  150  none Sun                 17:44:17.131145 -23.18.24.36460 ICRS    0          18011

Spectral Window List

  • The fourth section shows the information of the spws in the dataset. From the scan list, we see that science (Target) scans are done with the spw 0~12. Of these, the spws with 128 channels are 5,7,9,11, which are used for image synthesis. Therefore, we will apply calibrations to spws 5,7,9,11 only. The data of spws 0,1,2,3 are the data from the square-law detectors of the basebands, which will be used for creating Tsys+Tant tables, and are archived as the auto-correlation data in the dataset.
Spectral Windows:  (37 unique spectral windows and 2 unique polarization setups)
  SpwID  Name                                       #Chans   Frame   Ch0(MHz)  ChanWid(kHz)  TotBW(kHz) CtrFreq(MHz) BBC Num  Corrs  
  0      BB_1#SQLD                                       1   TOPO  230000.000   2000000.000   2000000.0 230000.0000        1  XX  YY
  1      BB_2#SQLD                                       1   TOPO  232000.000   2000000.000   2000000.0 232000.0000        2  XX  YY
  2      BB_3#SQLD                                       1   TOPO  246000.000   2000000.000   2000000.0 246000.0000        3  XX  YY
  3      BB_4#SQLD                                       1   TOPO  248000.000   2000000.000   2000000.0 248000.0000        4  XX  YY
  4      WVR#NOMINAL                                     4   TOPO  184550.000   1500000.000   7500000.0 187550.0000        0  XX
  5      X241538345#ALMA_RB_06#BB_1#SW-01#FULL_RES     128   TOPO  230992.188    -15625.000   2000000.0 230000.0000        1  XX  YY
  6      X241538345#ALMA_RB_06#BB_1#SW-01#CH_AVG         1   TOPO  229984.375   1796875.000   1796875.0 229984.3750        1  XX  YY
  7      X241538345#ALMA_RB_06#BB_2#SW-01#FULL_RES     128   TOPO  232992.188    -15625.000   2000000.0 232000.0000        2  XX  YY
  8      X241538345#ALMA_RB_06#BB_2#SW-01#CH_AVG         1   TOPO  231984.375   1796875.000   1796875.0 231984.3750        2  XX  YY
  9      X241538345#ALMA_RB_06#BB_3#SW-01#FULL_RES     128   TOPO  245007.813     15625.000   2000000.0 246000.0000        3  XX  YY
  10     X241538345#ALMA_RB_06#BB_3#SW-01#CH_AVG         1   TOPO  245984.375   1796875.000   1796875.0 245984.3750        3  XX  YY
  11     X241538345#ALMA_RB_06#BB_4#SW-01#FULL_RES     128   TOPO  247007.813     15625.000   2000000.0 248000.0000        4  XX  YY
  12     X241538345#ALMA_RB_06#BB_4#SW-01#CH_AVG         1   TOPO  247984.375   1796875.000   1796875.0 247984.3750        4  XX  YY
  13     BB_1#SQLD                                       1   TOPO  219559.000   2000000.000   2000000.0 219559.0000        1  XX  YY
  14     BB_2#SQLD                                       1   TOPO  219559.000   2000000.000   2000000.0 219559.0000        2  XX  YY
  15     BB_3#SQLD                                       1   TOPO  219559.000   2000000.000   2000000.0 219559.0000        3  XX  YY
  16     BB_4#SQLD                                       1   TOPO  219559.000   2000000.000   2000000.0 219559.0000        4  XX  YY
  17     X241538345#ALMA_RB_06#BB_1#SW-01#FULL_RES     128   TOPO  220551.188    -15625.000   2000000.0 219559.0000        1  XX  YY
  18     X241538345#ALMA_RB_06#BB_1#SW-01#CH_AVG         1   TOPO  219543.375   1796875.000   1796875.0 219543.3750        1  XX  YY
  19     X241538345#ALMA_RB_06#BB_2#SW-01#FULL_RES     128   TOPO  220551.188    -15625.000   2000000.0 219559.0000        2  XX  YY
  20     X241538345#ALMA_RB_06#BB_2#SW-01#CH_AVG         1   TOPO  219543.375   1796875.000   1796875.0 219543.3750        2  XX  YY
  21     X241538345#ALMA_RB_06#BB_3#SW-01#FULL_RES     128   TOPO  220551.188    -15625.000   2000000.0 219559.0000        3  XX  YY
  22     X241538345#ALMA_RB_06#BB_3#SW-01#CH_AVG         1   TOPO  219543.375   1796875.000   1796875.0 219543.3750        3  XX  YY
  23     X241538345#ALMA_RB_06#BB_4#SW-01#FULL_RES     128   TOPO  220551.188    -15625.000   2000000.0 219559.0000        4  XX  YY
  24     X241538345#ALMA_RB_06#BB_4#SW-01#CH_AVG         1   TOPO  219543.375   1796875.000   1796875.0 219543.3750        4  XX  YY
  25     BB_1#SQLD                                       1   TOPO  221538.000   2000000.000   2000000.0 221538.0000        1  XX  YY
  26     BB_2#SQLD                                       1   TOPO  223538.000   2000000.000   2000000.0 223538.0000        2  XX  YY
  27     BB_3#SQLD                                       1   TOPO  237538.000   2000000.000   2000000.0 237538.0000        3  XX  YY
  28     BB_4#SQLD                                       1   TOPO  239538.000   2000000.000   2000000.0 239538.0000        4  XX  YY
  29     X0000000000#ALMA_RB_06#BB_1#SW-01#FULL_RES    128   TOPO  222530.188    -15625.000   2000000.0 221538.0000        1  XX  YY
  30     X0000000000#ALMA_RB_06#BB_1#SW-01#CH_AVG        1   TOPO  221514.562   1781250.000   1781250.0 221514.5625        1  XX  YY
  31     X0000000000#ALMA_RB_06#BB_2#SW-01#FULL_RES    128   TOPO  224530.188    -15625.000   2000000.0 223538.0000        2  XX  YY
  32     X0000000000#ALMA_RB_06#BB_2#SW-01#CH_AVG        1   TOPO  223514.562   1781250.000   1781250.0 223514.5625        2  XX  YY
  33     X0000000000#ALMA_RB_06#BB_3#SW-01#FULL_RES    128   TOPO  236545.813     15625.000   2000000.0 237538.0000        3  XX  YY
  34     X0000000000#ALMA_RB_06#BB_3#SW-01#CH_AVG        1   TOPO  237514.563   1781250.000   1781250.0 237514.5625        3  XX  YY
  35     X0000000000#ALMA_RB_06#BB_4#SW-01#FULL_RES    128   TOPO  238545.813     15625.000   2000000.0 239538.0000        4  XX  YY
  36     X0000000000#ALMA_RB_06#BB_4#SW-01#CH_AVG        1   TOPO  239514.563   1781250.000   1781250.0 239514.5625        4  XX  YY
  • The fifth sections lists the spectral windows (spws) used for each Source. We exclude this for brevity.

Antenna List

  • The sixth section shows antenna information. Thirty-one antennas were used for the dataset. Note that numbering in python always begins with "0", so the antennas have IDs 0-30. To see what the antenna configuration looked like at the time of this observation, we use the task plotants (Figure 1):
Antennas: 31:
  ID   Name  Station   Diam.    Long.         Lat.                Offset from array center (m)                ITRF Geocentric coordinates (m)        
                                                                     East         North     Elevation               x               y               z
  0    CM01  N602      7.0  m   -067.45.17.4  -22.53.22.3          8.8042     -527.8587       22.2034  2225080.354846 -5440132.955920 -2481524.789784
  1    CM02  J502      7.0  m   -067.45.17.7  -22.53.23.0          2.1073     -549.4461       22.1460  2225070.957857 -5440127.670516 -2481544.655003
  2    CM03  J503      7.0  m   -067.45.17.4  -22.53.23.2          9.2482     -555.0637       22.1304  2225076.734430 -5440122.931505 -2481549.824201
  3    CM06  N606      7.0  m   -067.45.17.1  -22.53.23.6         19.1995     -566.5684       22.1011  2225084.240492 -5440114.997537 -2481560.411621
  4    CM07  N601      7.0  m   -067.45.17.0  -22.53.22.5         21.0633     -532.5817       22.1865  2225090.999805 -5440126.600430 -2481529.134327
  5    CM08  J505      7.0  m   -067.45.18.0  -22.53.22.8         -7.2123     -541.3466       22.1685  2225063.532652 -5440134.133528 -2481537.202006
  6    CM09  N603      7.0  m   -067.45.17.7  -22.53.22.3         -0.0497     -527.8657       22.1913  2225072.154896 -5440136.294753 -2481524.791487
  7    CM10  J501      7.0  m   -067.45.17.4  -22.53.22.9         10.0863     -545.4959       22.1606  2225078.929507 -5440126.084513 -2481541.021572
  8    CM11  N604      7.0  m   -067.45.17.8  -22.53.23.7         -0.2657     -571.8966       22.0829  2225065.433709 -5440120.432522 -2481565.313207
  9    DA41  A004      12.0 m   -067.45.15.9  -22.53.28.0         52.6609     -704.4171       21.7726  2225094.796703 -5440052.421785 -2481687.277348
  10   DA49  A002      12.0 m   -067.45.16.3  -22.53.27.6         40.6333     -690.2503       21.8023  2225085.761255 -5440062.100754 -2481674.237730
  11   DA50  A038      12.0 m   -067.45.18.5  -22.53.29.4        -22.4285     -745.7518       22.0606  2225019.312629 -5440066.210860 -2481725.468896
  12   DA52  A018      12.0 m   -067.45.17.2  -22.53.28.1         16.8264     -706.6065       21.7531  2225061.301483 -5440065.182346 -2481689.286759
  13   DA54  A005      12.0 m   -067.45.14.8  -22.53.28.7         83.3315     -725.0764       21.7237  2225120.123751 -5440033.331382 -2481706.290680
  14   DA55  A047      12.0 m   -067.45.16.4  -22.53.30.3         38.4542     -775.2187       21.5966  2225071.160250 -5440032.158745 -2481752.434689
  15   DA57  A025      12.0 m   -067.45.18.7  -22.53.27.4        -26.4296     -685.5228       22.2053  2225024.528985 -5440089.533369 -2481670.039352
  16   DA59  A001      12.0 m   -067.45.16.9  -22.53.27.7         24.1880     -693.3966       21.7925  2225070.073933 -5440067.185105 -2481677.132442
  17   DA61  A006      12.0 m   -067.45.15.0  -22.53.28.0         79.0341     -702.0939       21.7778  2225119.549746 -5440043.278703 -2481685.139167
  18   DA62  A035      12.0 m   -067.45.16.6  -22.53.28.1         32.0366     -706.8051       21.7640  2225075.353584 -5440059.362225 -2481689.473934
  19   DA63  A039      12.0 m   -067.45.18.0  -22.53.29.6         -6.1070     -751.7850       22.0696  2225033.533416 -5440057.867935 -2481731.030436
  20   DA65  A030      12.0 m   -067.45.18.1  -22.53.27.2        -10.3876     -679.1070       21.8267  2225040.189208 -5440085.447750 -2481663.981462
  21   DV02  A007      12.0 m   -067.45.15.1  -22.53.27.3         74.0140     -681.2928       21.3255  2225117.808983 -5440052.282474 -2481665.800190
  22   DV07  A027      12.0 m   -067.45.19.0  -22.53.28.7        -35.0460     -726.6032       21.5989  2225010.293430 -5440077.487712 -2481707.648731
  23   DV11  A049      12.0 m   -067.45.14.6  -22.53.29.6         88.4465     -754.5446       20.1464  2225119.968124 -5440019.440510 -2481732.824666
  24   DV12  A017      12.0 m   -067.45.15.9  -22.53.26.8         51.3634     -665.5893       21.3604  2225099.169786 -5440066.540560 -2481651.346952
  25   DV13  A064      12.0 m   -067.45.14.7  -22.53.31.4         85.6567     -808.0278       21.0176  2225109.813656 -5440001.983403 -2481782.434609
  26   DV17  A031      12.0 m   -067.45.19.1  -22.53.27.1        -37.8149     -675.5186       21.7325  2225015.299768 -5440097.041914 -2481660.638998
  27   DV18  A009      12.0 m   -067.45.16.1  -22.53.26.1         48.2542     -644.4621       21.0152  2225099.282791 -5440075.029589 -2481631.749120
  28   DV20  A033      12.0 m   -067.45.19.4  -22.53.29.0        -47.3621     -735.6360       21.8836  2224997.663712 -5440079.140555 -2481716.080921
  29   DV22  A014      12.0 m   -067.45.15.1  -22.53.26.4         74.5090     -654.2102       20.9880  2225122.137554 -5440061.557701 -2481640.719077
  30   DV23  A003      12.0 m   -067.45.16.5  -22.53.27.0         35.5295     -672.6352       21.3390  2225083.469962 -5440069.979758 -2481657.829615
Fig. 1. plotants output for the dataset uid___A002_Xae00c5_X2a8d. The plot has been scaled to approximately equal X and Y spacing. The compact cluster of 7m "CM" antennas is near the top, and the more spread out 12m antennas are labeled "DA" and "DV."

Now let's plot the antennas with plotants:

# In CASA
plotants(vis=mso, figfile='plotants.png')

Flagging Unnecessary Data

Some scans in the data were used by the online system for pointing and sideband ratio calibration. These scans are no longer needed, and we can flag them easily with flagdata by selecting on 'intent'.

#In CASA
flagdata(vis=mso, mode='manual', intent='*POINTING*,*SIDEBAND_RATIO*', flagbackup=False)

The averaged data of each spectrum window is not used, so we flagged the averaged data as a follow.

#In CASA
flagdata(vis=mso, mode='manual', spw='6,8,10,12', flagbackup=False)

We will then store the current flagging state for each dataset using the flagmanager:

#In CASA
flagmanager(vis=mso, mode='save', versionname='priori1')

A priori calibration

Tsys calibration of the calibrators

Fig. 2. One example of the Tsys plots.

The System Temperature (Tsys) calibration gives a first-order correction for the atmospheric opacity as a function of time and frequency, and associates weights with each visibility that persist through imaging. The MS dataset contains Tsys measurements; the task gencal is used to generate a calibration table. Since the dataset obtained with TDM, the data in the channels near the both edges of the spectrum window (~10 channels) are flagged with flagdata. The plots for checking are created by the checkCalTable subroutine of the Analysis Utilities package and saved to a new directory uid___A002_Xae00c5_X2a8d.ms.tsys.plots (Figure 2).

#In CASA
gencal(vis=mso, caltable=mso+'.tsys', caltype='tsys')

flagdata(vis=mso+'.tsys', mode='manual', spw='5:0~9;116~127,7:0~9;116~127,9:0~9;116~127,11:0~9;116~127', flagbackup=False)

es.checkCalTable(mso+'.tsys', msName=mso, interactive=False)

The Tsys of DA54 antennas are significant large, from the plot. In the later part, we will flag the data of the antenna. Please ignore the data of the scan #1, because the scan is not done for ATM cal. The scan is used for the measurement of zero-signal level .

We will apply the Tsys calibration table to the data of the calibrators with the task applycal, which reads the specified gain calibration tables, applies them to the (raw) data column, and writes the calibrated results into the corrected column. For non-solar observations, we also apply the WVR (Water Vapor Radiometer) calibration table to data. However, we must NOT apply the WVR table to the solar data, because the WVR receivers at the Sun are saturated. We apply the Tsys calibration table to the data of the bandpass calibrator:

#In CASA
applycal(vis=mso, field='1', spw='5,7,9,11', gaintable=mso+'.tsys', gainfield='1', interp='linear,linear', calwt=True, flagbackup=False)

In the observations, we do not the atmospheric calibration of the phase calibrator between the scientific scans, because a long suspension of scientific observations has a bad influence on science. Therefore, we apply the Tsys calibration table, which is created from the data of the atmosphere calibration at the flux calibrator or the Sun, to the phase calibrator, as follows.

#In CASA
applycal(vis=mso, field='2', spw='5,7,9,11', gaintable=mso+'.tsys', gainfield='2', interp='linear,linear', calwt=True, flagbackup=False)

You can use plotms to plot channel-averaged amplitudes as a function of time, comparing the DATA and CORRECTED columns after applying the Tsys correction. This way you can check that calibration has done what was expected, which is put the data onto the Kelvin temperature scale.

Tsys+Tant calibration of the Sun

The standard method of Tsys calibration cannot be applied to the data of the Sun, because the antenna temperature (Tant) of the Sun cannot be neglected for estimating the system equivalent flux density (SEFD). To estimate correct SEFD at the Sun, the solar observing sequence includes some special measurements, like the measurement of zero-signal level. The subroutines for creating and applying Tsys+Tant calibration tables are prepared by the ALMA solar development team. They are part of the script we executed in the section #Import Tools and Scripts. For the Tsys+Tant calibration of the solar data, you will execute only the following command:

#In CASA
sol_ampcal_2(mso, mso+'.tsys', exisTbl=False, outCSV=True)

This process takes a long time, about one night or day.

If you have already carried out the process before and there are the Tsys+Tant calibration tables (The directory name of the table includes “tsystant”), you can skip the generating of the tables using the following command.

#In CASA
sol_ampcal_2(mso, mso+'.tsys', exisTbl=True, outCSV=False)

Flagging after Tsys and Tsys+Tant calibration

Since we completed the Tsys and Tsys+Tant calibration, the data that are not used the image synthesis are flagged. At first, the data of auto-correlation and atmosphere calibration are flagged as follows:

#In CASA
flagdata(vis=mso, mode='manual', autocorr=True, flagbackup=False)
flagdata(vis=mso, mode='manual', intent='*ATMOSPHERE*', flagbackup=False)

Next is the spectrum windows that are not used in later:

#In CASA
flagdata(vis=mso, mode='manual', spw='0~4', flagbackup=False)
flagdata(vis=mso, mode='manual', spw='13~36', flagbackup=False)

The data in the channels near the both edges of the spectrum window (~10 channels) are flagged:

#In CASA
flagdata(vis=mso, mode='manual', flagbackup=False, spw='5:0~9;116~127,7:0~9;116~127,9:0~9;116~127,11:0~9;116~127')

The some sub-scans at the start and end of the scientific scans are used to measure the sky with the setting of optimized for the Sun. Since the data are used only for estimating the antenna temperatures at the Sun, we flag the data:

#In CASA
mymsmd = createCasaTool(msmdtool)
mymsmd.open(mso)
sciScan = mymsmd.scansforintent('*OBSERVE_TARGET*')
mymsmd.done()

for i in range(0, len(sciScan)):
      subInf=aU.computeDurationOfScan(sciScan[i], vis=mso, returnSubscanTimes=True)
      subNum = subInf[1]
      flagdata(vis=mso, timerange=subInf[3][1], mode='manual', flagbackup=False)       
      flagdata(vis=mso, timerange=subInf[3][2],mode='manual', flagbackup=False)       
      flagdata(vis=mso, timerange=subInf[3][subNum-1], mode='manual', flagbackup=False)       
      flagdata(vis=mso, timerange=subInf[3][subNum], mode='manual', flagbackup=False)

As mentioned in the section #Tsys calibration of the calibrators, the Tsys values of DA54 antennas are significantly large. Therefore, we flag the data of the antenna as follows:

#In CASA
flagdata(vis=mso, antenna='DA54', mode='manual', flagbackup=False)

Then, we store the current flagging state for each dataset using the flagmanager:

#In CASA
flagmanager(vis=mso, mode='save', versionname='priori2')

Now split out the CORRECTED data column, retaining spectral windows 5,7,9, and 11. This will get rid of the extraneous spectral windows.

#In CASA
split(vis=mso, outputvis=mss, datacolumn='corrected', intent ='*BANDPASS*,*FLUX*,*PHASE*,*TARGET*', spw='5,7,9,11', keepflags=True)

Additional Data Inspection

We will do some additional inspection.

The solar data frequently include zero values in some channels. To avoid their influence, we flag the data using the “clip” mode with “clipzeros=True” option.

#In CASA
flagdata(vis=mss, mode='clip', clipzeros=True, flagbackup=False)

The valleys appear in the plot of amplitude vs channel of the Spw #3. It shows the effect of the lines of the earth atmosphere. We need to flag the data.

#In CASA
flagdata(vis=mss, spw='3:68~85', mode='manual', flagbackup=False)
flagdata(vis=mss, spw='3:20~40', mode='manual', flagbackup=False)

Then, we store the current flagging state for each dataset using the flagmanager:

#In CASA
flagmanager(vis=mss, mode='save', versionname='Initial')

Set up the Flux Calibration Model

It is very rare that a useful planet for the flux calibration is located near the Sun. Therefore, we usually use a quasar near the Sun as a flux calibrator. In this observations, there is no quasar that flux is enough for the observations with the Mixer De-tuning mode, except nrao350. Therefore, the flux calibrator is the same as the phase calibrator in this observation. To fill the model data column for nrao350 with a model for the flux density, we obtain the flux density and spectral index of the nro350 from the ALMA calibrator database.

#In CASA
intentSources=es.getIntentsAndSourceNames(mss)
ampCalId = intentSources['CALIBRATE_AMPLI']['id'] + intentSources['CALIBRATE_FLUX']['id']
calFieldNames = intentSources['CALIBRATE_AMPLI']['name'] + intentSources['CALIBRATE_FLUX']['name']

amp_cal_name=calFieldNames[1]
spwInfo=es.getSpwInfo(mss)
obs_freq="%fGHz"%(spwInfo[0]['refFreq']/1e9)

date=aU.getObservationStartDate(mss)
date_obs=date.split()[0]
spw1_flux=aU.getALMAFlux(sourcename=amp_cal_name, date=date_obs,frequency=obs_freq)

Then, fill the model data column for nrao350 with a model.

#In CASA
setjy(vis=mss, field='2', spw='0,1,2,3', standard='manual', fluxdensity=[spw1_flux['fluxDensity'], 0, 0, 0], spix= spw1_flux['spectralIndex'], reffreq=obs_freq)

Creating the Bandpass Calibration Table

The bandpass and gain calibrations are the same as the calibrations of non-solar data basically. Please refer to the other ALMA tutorials of the CASA guide too. The calibration method presented below is the same as that used in the QA2 process of the ALMA observatory.

At first, we determine the reference antenna, and run gaincal on the bandpass calibrator to determine phase-only gain solutions. We will use solint='int' for the solution interval, which means that one gain solution will be determined for every integration time.

#In CASA
ref_ant = 'DA41'
gaincal(vis=mss, caltable=mss+'.ap_pre_bandpass', field='1', scan='5', solint='int', refant=ref_ant, calmode='p')

The plots are created for the checking.

#In CASA
es.checkCalTable(mss+'.ap_pre_bandpass', msName=mss, interactive=False)

The plots look good. Next, create the bandpass calibration table:

#In CASA
bandpass(vis=mss, caltable=mss+'.bandpass', field='1', scan='5', solint='inf', refant=ref_ant, solnorm=True, bandtype='B', gaintable=mss+'.ap_pre_bandpass')

Check the bandpass calibration table using the plots created from the following command.

#In CASA
es.checkCalTable(mss+'.bandpass', msName=mss, interactive=False)

Creating the Gain Calibration Table

At first, we determine phase-only gain solutions of the calibrators, using the bandpass calibration table and solint='int' option, and create the plots for checking.

#In CASA
gaincal(vis=mss, caltable=mss+'.phase_int', field='1~2', solint='int', refant=ref_ant,gaintype='G',calmode='p',minsnr=3.0, gaintable=mss+'.bandpass')
es.checkCalTable(mss+'.phase_int', msName=mss, interactive=False)

Using the bandpass and phase calibration tables, we obtain the amplitude-only gain solutions on the scan time, solint='inf'.

# In CASA
gaincal(vis=mss, caltable=mss+'.ampli_inf', field='1~2', solint='inf', refant=ref_ant, gaintype='G', calmode='a', minsnr=3.0, gaintable=[mss+'.bandpass', mss+'.phase_int'])
es.checkCalTable(mss+'.ampli_inf', msName=mss, interactive=False)

Usually, the gaintype is set to 'T' for nominal ALMA observations . Nevetheless, the gaintype is set to 'G' for solar data, because the diffrence between XX and YY images is used for for estimating the noise level (see Section 4.2, Shimojo et al. 2017).

Next we use the flux calibrator (whose flux density was set in setjy above) to derive the flux density of the other calibrators. Note that the flux table REPLACES the amp.gcal in terms of future application of the calibration to the data, i.e. the flux table contains both the amp.gcal and flux scaling. Unlike the gain calibration steps, this is not an incremental table.

#In CASA
fluxscaleDict = fluxscale(vis=mss, caltable=mss+'.ampli_inf', fluxtable=mss+'.flux_inf', reference='2') 
es.fluxscale2(caltable=mss+'.ampli_inf', removeOutliers=True, msName=mss, writeToFile=True, preavg=10000)

Finally, we create the gain calibration table of phase-only gain solutions on the scan time, solint='inf'.

#In CASA
gaincal(vis=mss, caltable=mss+'.phase_inf', field='1~2', solint='inf', refant=ref_ant, gaintype='G', calmode='p', minsnr=3.0, gaintable=mss+'.bandpass')
es.checkCalTable(mss+'.phase_inf', msName=mss, interactive=False)

Applying the Calibration Tables

We apply the calibration solutions to each source individually, using the gainfield parameter to specify which calibrator's solutions should be applied from each of the gaintable calibration tables. Applying the tables to the bandpass, flux and phase calibrators:

#In CASA
for i in ['1', '2']: 
      applycal(vis=mss, field=str(i), gaintable=[mss+'.bandpass', mss+'.phase_int', mss+'.flux_inf'], gainfield=['', i, i], interp='linear,linear', calwt=True, flagbackup=False)

Next, applying them to the solar data:

#In CASA
applycal(vis=mss, field='0, 3~150', gaintable=[mss+'.bandpass', mss+'.phase_inf', mss+'.flux_inf'], gainfield=['', '2', ''], interp='linear,linear', calwt=True, flagbackup=False)

Finally, split out the CORRECTED data column.

#In CASA
split(vis=mss, outputvis=msc, datacolumn='corrected', keepflags=True)

Re-calculation of the direction

Fig. 3. The pattern of mosaic BEFORE the re-calculation of the direction.
Fig. 4. The pattern of mosaic AFTER the re-calculation of the direction.

During most solar observations, the antennas are tracking a structure on the Sun according to the solar differential rotation. The image frame is fixed on the solar frame, but the frame is moving on the RA/Dec coordinate frame. If we do not do any measures, the pattern of pointing in the MOSAIC observation is shown in Figure 3 , and the shape of the pattern is a rhombus though the correct shape is the square.

To correct the MOSAIC pattern, we re-calculate the coordinate of each field. At first, we modify the coordinate of the field “0” from the reference time using fixplanets task. The reference time has to be the time when the antennas are directed to the field “0”.

#In CASA
reftime = '2015/12/18/19:49:00'
fixplanets(msc, field='0', fixuvw=False, refant=ref_ant, reftime=reftime)

We define that the modified coordinate of field ’0’ is as the reference coordinate, and re-calculate the coordinate of each field, as follows.

#In CASA
tb.open(msc+'/FIELD', nomodify=True)
phsCenOff = tb.getcol("PHASE_DIR")
tb.close()
refRaDec = aU.rad2radec(phsCenOff[0][0][0], phsCenOff[1][0][0],  prec=1, hmsdms=True, delimiter=' ')   
for i in range(3, 151):
    raOff = phsCenOff[0][0][i] * 180./pi * 60. *60.
    deOff = phsCenOff[1][0][i] * 180./pi * 60. *60.
    offRaDec = aU.radec2deg(aU.radecOffsetToRadec(refRaDec, raOff, deOff, prec=1))
    offRaDecF = 'J2000 ' + aU.deg2radec(offRaDec[0], offRaDec[1],  prec=1, hmsdms=True, delimiter=' ')         
    fixplanets(msc, field =str(i), fixuvw=False, direction=offRaDecF)

tb.open(msc+'/FIELD', nomodify=False)
tgt_refdir = tb.getcol("RefDir_Ref")
for id in range(3, len(tgt_refdir)):
    tb.putcell("RefDir_Ref", id, 21)
    tb.putcell("DelayDir_Ref", id, 21)
    tb.putcell("PhaseDir_Ref", id, 21)
tb.close()

Moreover, the direction in the pointing table has a bad influence to the coordinate system of the image synthesis. We erase the pointing table as follows:

#In CASA
tb.open(msc+'/POINTING', nomodify = False)
a = tb.rownumbers()
tb.removerows(a)

As a result, the pattern of the pointing in the MOSAIC observation becomes the map, as shown in Figure 4.