CASA EVLA Scripts: Difference between revisions

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Download script: [[File:List_sdm.py]]
Download script: [[File:List_sdm.py]]
This script lists information directly from the SDM directory's XML tables and prints this information to the CASA log.  Formatting is similar to the task {{listobs}}; however, list_sdm is much faster for larger datasets, and can be run before (or while) importing to an MS. 
It will also return a dictionary keyed on scan number.  The dictionary contains the following information, which can be useful for scan selection prior to import:
        'baseband'  list of baseband name(s)
        'chanwidth'  list of channel widths (Hz)
        'end'        observation end time (UTC)
        'field'      field ID
        'intent'    scan intent(s)
        'nchan'      list of number of channels
        'nsubs'      number of subscans
        'reffreq'    list of reference frequencies (Hz)
        'source'    source name
        'spws'      list of spectral windows
        'start'      observation start time (UTC)
        'timerange'  start time - end time range (UTC)
<source lang="python">
# In CASA
from List_sdm import list_sdm
myScanDict = list_sdm('mySDMfile')
</source>
Representative log output:
<pre style="background-color: #ffe4b5;">
2011-01-02 02:26:32 INFO listsdm ================================================================================
2011-01-02 02:26:32 INFO listsdm   SDM File: AS1039_sb1382796_2_000.55368.51883247685
2011-01-02 02:26:32 INFO listsdm ================================================================================
2011-01-02 02:26:32 INFO listsdm   Observer: Michael P. Rupen
2011-01-02 02:26:32 INFO listsdm   Facility: EVLA, D-configuration
2011-01-02 02:26:32 INFO listsdm       Observed from 2010/06/21/12:27:08.17 to 2010/06/21/13:26:55.70 (UTC)
2011-01-02 02:26:32 INFO listsdm       Total integration time = 3587.53 seconds (1.00 hours)
2011-01-02 02:26:32 INFO listsdm
2011-01-02 02:26:32 INFO listsdm Scan listing:
2011-01-02 02:26:32 INFO listsdm   Timerange (UTC)          Scan FldID  FieldName      SpwIDs        Intent(s)
2011-01-02 02:26:32 INFO listsdm   12:27:08.17 - 12:28:05.36    1    0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:28:05.36 - 12:29:05.20    2    0  J2038+5119      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:29:05.20 - 12:30:05.04    3    0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:30:05.04 - 12:36:04.05    4    1  V407 Cyg+4amin  [0, 1]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm   12:36:04.05 - 12:37:23.83    5    0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:37:23.83 - 12:50:21.71    6    1  V407 Cyg+4amin  [0, 1]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm   12:50:21.71 - 12:51:41.49    7    0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:51:41.49 - 12:53:01.27    8    2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   12:53:01.27 - 12:59:00.29    9    3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm   12:59:00.29 - 13:00:20.07  10    2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   13:00:20.07 - 13:06:19.08  11    3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm   13:06:19.08 - 13:07:38.86  12    2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   13:07:38.86 - 13:13:37.88  13    3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm   13:13:37.88 - 13:14:57.66  14    2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm   13:14:57.66 - 13:19:56.84  15    4  J0137+3309      [0, 1]  CALIBRATE_PHASE UNSPECIFIED CALIBRATE_BANDPASS CALIBRATE_AMPLI
2011-01-02 02:26:32 INFO listsdm   13:19:56.84 - 13:21:56.52  16    4  J0137+3309      [2, 3]  CALIBRATE_PHASE UNSPECIFIED CALIBRATE_BANDPASS CALIBRATE_AMPLI
2011-01-02 02:26:32 INFO listsdm   13:21:56.52 - 13:24:56.02  17    5  J0319+4130      [0, 1]  CALIBRATE_PHASE CALIBRATE_BANDPASS UNSPECIFIED
2011-01-02 02:26:32 INFO listsdm   13:24:56.02 - 13:26:55.70  18    5  J0319+4130      [2, 3]  CALIBRATE_PHASE CALIBRATE_BANDPASS UNSPECIFIED
2011-01-02 02:26:32 INFO listsdm
2011-01-02 02:26:32 INFO listsdm Spectral window information:
2011-01-02 02:26:32 INFO listsdm   SpwID  #Chans  Ch0(MHz)  ChWidth(kHz) TotBW(MHz)  Baseband
2011-01-02 02:26:32 INFO listsdm   0      64      1388.0    2000.0      128.0      BB_4   
2011-01-02 02:26:32 INFO listsdm   1      64      1756.0    2000.0      128.0      BB_8   
2011-01-02 02:26:32 INFO listsdm   2      64      4736.0    2000.0      128.0      BB_4   
2011-01-02 02:26:32 INFO listsdm   3      64      7836.0    2000.0      128.0      BB_8   
2011-01-02 02:26:32 INFO listsdm
2011-01-02 02:26:32 INFO listsdm Field information:
2011-01-02 02:26:32 INFO listsdm   FldID  Code  Name            RA            Dec            SrcID
2011-01-02 02:26:32 INFO listsdm   0      D      J2038+5119      20:38:37.03  +051.19.12.663  0   
2011-01-02 02:26:32 INFO listsdm   1      NONE  V407 Cyg+4amin  21:02:09.80  +045.50.32.980  1   
2011-01-02 02:26:32 INFO listsdm   2      D      J2048+4310      20:48:19.53  +043.10.42.073  2   
2011-01-02 02:26:32 INFO listsdm   3      NONE  V407 Cyg+1amin  21:02:09.80  +045.47.32.980  3   
2011-01-02 02:26:32 INFO listsdm   4      Z      J0137+3309      01:37:41.30  +033.09.35.133  4   
2011-01-02 02:26:32 INFO listsdm   5      Z      J0319+4130      03:19:48.16  +041.30.42.103  5   
2011-01-02 02:26:32 INFO listsdm
2011-01-02 02:26:32 INFO listsdm Antennas (26):
2011-01-02 02:26:32 INFO listsdm   ID    Name  Station  Diam.(m)  Lat.          Long.
2011-01-02 02:26:32 INFO listsdm   0    ea01  W09      25.0      +000.00.00.0  +000.00.00.0
2011-01-02 02:26:32 INFO listsdm   1    ea02  E02      25.0      +033.53.51.0  -107.37.25.2
2011-01-02 02:26:32 INFO listsdm   2    ea03  E09      25.0      +033.54.01.1  -107.37.04.4
2011-01-02 02:26:32 INFO listsdm   3    ea04  W01      25.0      +033.53.53.6  -107.36.45.1
2011-01-02 02:26:32 INFO listsdm   4    ea05  W08      25.0      +033.54.00.5  -107.37.05.9
2011-01-02 02:26:32 INFO listsdm   5    ea08  N01      25.0      +033.53.53.0  -107.37.21.6
2011-01-02 02:26:32 INFO listsdm   6    ea09  E06      25.0      +033.54.01.8  -107.37.06.0
2011-01-02 02:26:32 INFO listsdm   7    ea10  N03      25.0      +033.53.57.7  -107.36.55.6
2011-01-02 02:26:32 INFO listsdm   8    ea11  E04      25.0      +033.54.04.8  -107.37.06.3
2011-01-02 02:26:32 INFO listsdm   9    ea12  E08      25.0      +033.53.59.7  -107.37.00.8
2011-01-02 02:26:32 INFO listsdm   10    ea13  N07      25.0      +033.53.55.1  -107.36.48.9
2011-01-02 02:26:32 INFO listsdm   11    ea14  E05      25.0      +033.54.12.9  -107.37.07.2
2011-01-02 02:26:32 INFO listsdm   12    ea15  W06      25.0      +033.53.58.8  -107.36.58.4
2011-01-02 02:26:32 INFO listsdm   13    ea16  W02      25.0      +033.53.56.4  -107.37.15.6
2011-01-02 02:26:32 INFO listsdm   14    ea17  W07      25.0      +033.54.00.9  -107.37.07.5
2011-01-02 02:26:32 INFO listsdm   15    ea18  N09      25.0      +033.53.54.8  -107.37.18.4
2011-01-02 02:26:32 INFO listsdm   16    ea19  W04      25.0      +033.54.19.0  -107.37.07.8
2011-01-02 02:26:32 INFO listsdm   17    ea20  N05      25.0      +033.53.59.1  -107.37.10.8
2011-01-02 02:26:32 INFO listsdm   18    ea21  E01      25.0      +033.54.08.0  -107.37.06.7
2011-01-02 02:26:32 INFO listsdm   19    ea22  N04      25.0      +033.53.59.2  -107.37.05.7
2011-01-02 02:26:32 INFO listsdm   20    ea23  E07      25.0      +033.54.06.1  -107.37.06.5
2011-01-02 02:26:32 INFO listsdm   21    ea24  W05      25.0      +033.53.56.5  -107.36.52.4
2011-01-02 02:26:32 INFO listsdm   22    ea25  N02      25.0      +033.53.57.8  -107.37.13.0
2011-01-02 02:26:32 INFO listsdm   23    ea26  W03      25.0      +033.54.03.5  -107.37.06.2
2011-01-02 02:26:32 INFO listsdm   24    ea27  E03      25.0      +033.54.00.1  -107.37.08.9
2011-01-02 02:26:32 INFO listsdm   25    ea28  N08      25.0      +033.54.00.5  -107.37.02.8
</pre>
An entry from the scan dictionary:
<pre style="background-color: #ffe4b5;">
CASA <16>: myScanDict
  Out[16]:
{1: {'baseband': ['BB_4', 'BB_8'],
    'chanwidth': [2000000.0, 2000000.0],
    'end': '2010/06/21/12:28:05.36',
    'field': 0,
    'intent': 'CALIBRATE_PHASE',
    'nchan': [64, 64],
    'nsubs': 1,
    'reffreq': [1388000000.0, 1756000000.0],
    'source': 'J2038+5119',
    'spws': [0, 1],
    'start': '2010/06/21/12:27:08.17',
    'timerange': '2010/06/21/12:27:08.17~2010/06/21/12:28:05.36'},
</pre>

Revision as of 22:28, 1 January 2011


Temporary edit link

edit me in CASA Guides

Overview

This is a collection of Python scripts to help process and analyze EVLA data. Although they are not officially supported, some authors may choose to provide contact information. A brief description on how to run each script is provided by the author. If you would like to contribute, and do not have access to the CASA Guides Wiki, you may email Miriam Krauss (mkrauss at nrao.edu).

Plotting the weather table, obtaining observation-specific opacity information

plotWX weather table figure

Download script: File:Script plotWX.py

This script will plot weather table information in the MS (see example below) as well as return a list of estimated zenith opacity values for each spectral window. 

# In CASA
from Script_plotWX import plotWX
myTau = plotwx('myVis.ms')

Importing, listing, plotting, and applying online flags

plotflags figure

Download script: File:Readflags.py

This script reads the Flags.xml table in the SDM directory, and parses the online antenna flags so that they can be listed, plotted, and applied to the MS. Note that the tbuff parameter is a padding value (in seconds) for creating the flag time ranges.

Here, flags are read in and listed, then plotted and applied. The plot file is saved to a file for future reference. 

# In CASA
from Readflags import listflags, readflags, plotflags, useflags
myFlags = readflags('mySDMfile', tbuff=1.5)
listflags(myFlags)
plotflags(myFlags)
pl.savefig('mySDMfile_onlineFlags.png')
useflags('myVis.ms', myFlags)

Listing observation information directly from the SDM files

Download script: File:List sdm.py

This script lists information directly from the SDM directory's XML tables and prints this information to the CASA log. Formatting is similar to the task listobs; however, list_sdm is much faster for larger datasets, and can be run before (or while) importing to an MS.

It will also return a dictionary keyed on scan number. The dictionary contains the following information, which can be useful for scan selection prior to import: 

       'baseband'   list of baseband name(s)
       'chanwidth'  list of channel widths (Hz)
       'end'        observation end time (UTC)
       'field'      field ID
       'intent'     scan intent(s)
       'nchan'      list of number of channels
       'nsubs'      number of subscans
       'reffreq'    list of reference frequencies (Hz)
       'source'     source name
       'spws'       list of spectral windows
       'start'      observation start time (UTC)
       'timerange'  start time - end time range (UTC)

# In CASA
from List_sdm import list_sdm
myScanDict = list_sdm('mySDMfile')

Representative log output: 

2011-01-02 02:26:32 INFO listsdm	================================================================================
2011-01-02 02:26:32 INFO listsdm	   SDM File: AS1039_sb1382796_2_000.55368.51883247685
2011-01-02 02:26:32 INFO listsdm	================================================================================
2011-01-02 02:26:32 INFO listsdm	   Observer: Michael P. Rupen
2011-01-02 02:26:32 INFO listsdm	   Facility: EVLA, D-configuration
2011-01-02 02:26:32 INFO listsdm	      Observed from 2010/06/21/12:27:08.17 to 2010/06/21/13:26:55.70 (UTC)
2011-01-02 02:26:32 INFO listsdm	      Total integration time = 3587.53 seconds (1.00 hours)
2011-01-02 02:26:32 INFO listsdm	 
2011-01-02 02:26:32 INFO listsdm	Scan listing:
2011-01-02 02:26:32 INFO listsdm	  Timerange (UTC)           Scan FldID  FieldName       SpwIDs         Intent(s)
2011-01-02 02:26:32 INFO listsdm	  12:27:08.17 - 12:28:05.36    1     0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:28:05.36 - 12:29:05.20    2     0  J2038+5119      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:29:05.20 - 12:30:05.04    3     0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:30:05.04 - 12:36:04.05    4     1  V407 Cyg+4amin  [0, 1]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm	  12:36:04.05 - 12:37:23.83    5     0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:37:23.83 - 12:50:21.71    6     1  V407 Cyg+4amin  [0, 1]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm	  12:50:21.71 - 12:51:41.49    7     0  J2038+5119      [0, 1]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:51:41.49 - 12:53:01.27    8     2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  12:53:01.27 - 12:59:00.29    9     3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm	  12:59:00.29 - 13:00:20.07   10     2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  13:00:20.07 - 13:06:19.08   11     3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm	  13:06:19.08 - 13:07:38.86   12     2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  13:07:38.86 - 13:13:37.88   13     3  V407 Cyg+1amin  [2, 3]  OBSERVE_TARGET
2011-01-02 02:26:32 INFO listsdm	  13:13:37.88 - 13:14:57.66   14     2  J2048+4310      [2, 3]  CALIBRATE_PHASE
2011-01-02 02:26:32 INFO listsdm	  13:14:57.66 - 13:19:56.84   15     4  J0137+3309      [0, 1]  CALIBRATE_PHASE UNSPECIFIED CALIBRATE_BANDPASS CALIBRATE_AMPLI
2011-01-02 02:26:32 INFO listsdm	  13:19:56.84 - 13:21:56.52   16     4  J0137+3309      [2, 3]  CALIBRATE_PHASE UNSPECIFIED CALIBRATE_BANDPASS CALIBRATE_AMPLI
2011-01-02 02:26:32 INFO listsdm	  13:21:56.52 - 13:24:56.02   17     5  J0319+4130      [0, 1]  CALIBRATE_PHASE CALIBRATE_BANDPASS UNSPECIFIED
2011-01-02 02:26:32 INFO listsdm	  13:24:56.02 - 13:26:55.70   18     5  J0319+4130      [2, 3]  CALIBRATE_PHASE CALIBRATE_BANDPASS UNSPECIFIED
2011-01-02 02:26:32 INFO listsdm	 
2011-01-02 02:26:32 INFO listsdm	Spectral window information:
2011-01-02 02:26:32 INFO listsdm	  SpwID  #Chans  Ch0(MHz)  ChWidth(kHz) TotBW(MHz)  Baseband
2011-01-02 02:26:32 INFO listsdm	  0      64      1388.0    2000.0       128.0       BB_4    
2011-01-02 02:26:32 INFO listsdm	  1      64      1756.0    2000.0       128.0       BB_8    
2011-01-02 02:26:32 INFO listsdm	  2      64      4736.0    2000.0       128.0       BB_4    
2011-01-02 02:26:32 INFO listsdm	  3      64      7836.0    2000.0       128.0       BB_8    
2011-01-02 02:26:32 INFO listsdm	 
2011-01-02 02:26:32 INFO listsdm	Field information:
2011-01-02 02:26:32 INFO listsdm	  FldID  Code   Name             RA            Dec             SrcID
2011-01-02 02:26:32 INFO listsdm	  0      D      J2038+5119       20:38:37.03   +051.19.12.663  0    
2011-01-02 02:26:32 INFO listsdm	  1      NONE   V407 Cyg+4amin   21:02:09.80   +045.50.32.980  1    
2011-01-02 02:26:32 INFO listsdm	  2      D      J2048+4310       20:48:19.53   +043.10.42.073  2    
2011-01-02 02:26:32 INFO listsdm	  3      NONE   V407 Cyg+1amin   21:02:09.80   +045.47.32.980  3    
2011-01-02 02:26:32 INFO listsdm	  4      Z      J0137+3309       01:37:41.30   +033.09.35.133  4    
2011-01-02 02:26:32 INFO listsdm	  5      Z      J0319+4130       03:19:48.16   +041.30.42.103  5    
2011-01-02 02:26:32 INFO listsdm	 
2011-01-02 02:26:32 INFO listsdm	Antennas (26):
2011-01-02 02:26:32 INFO listsdm	  ID    Name   Station   Diam.(m)  Lat.          Long.
2011-01-02 02:26:32 INFO listsdm	  0     ea01   W09       25.0      +000.00.00.0  +000.00.00.0 
2011-01-02 02:26:32 INFO listsdm	  1     ea02   E02       25.0      +033.53.51.0  -107.37.25.2 
2011-01-02 02:26:32 INFO listsdm	  2     ea03   E09       25.0      +033.54.01.1  -107.37.04.4 
2011-01-02 02:26:32 INFO listsdm	  3     ea04   W01       25.0      +033.53.53.6  -107.36.45.1 
2011-01-02 02:26:32 INFO listsdm	  4     ea05   W08       25.0      +033.54.00.5  -107.37.05.9 
2011-01-02 02:26:32 INFO listsdm	  5     ea08   N01       25.0      +033.53.53.0  -107.37.21.6 
2011-01-02 02:26:32 INFO listsdm	  6     ea09   E06       25.0      +033.54.01.8  -107.37.06.0 
2011-01-02 02:26:32 INFO listsdm	  7     ea10   N03       25.0      +033.53.57.7  -107.36.55.6 
2011-01-02 02:26:32 INFO listsdm	  8     ea11   E04       25.0      +033.54.04.8  -107.37.06.3 
2011-01-02 02:26:32 INFO listsdm	  9     ea12   E08       25.0      +033.53.59.7  -107.37.00.8 
2011-01-02 02:26:32 INFO listsdm	  10    ea13   N07       25.0      +033.53.55.1  -107.36.48.9 
2011-01-02 02:26:32 INFO listsdm	  11    ea14   E05       25.0      +033.54.12.9  -107.37.07.2 
2011-01-02 02:26:32 INFO listsdm	  12    ea15   W06       25.0      +033.53.58.8  -107.36.58.4 
2011-01-02 02:26:32 INFO listsdm	  13    ea16   W02       25.0      +033.53.56.4  -107.37.15.6 
2011-01-02 02:26:32 INFO listsdm	  14    ea17   W07       25.0      +033.54.00.9  -107.37.07.5 
2011-01-02 02:26:32 INFO listsdm	  15    ea18   N09       25.0      +033.53.54.8  -107.37.18.4 
2011-01-02 02:26:32 INFO listsdm	  16    ea19   W04       25.0      +033.54.19.0  -107.37.07.8 
2011-01-02 02:26:32 INFO listsdm	  17    ea20   N05       25.0      +033.53.59.1  -107.37.10.8 
2011-01-02 02:26:32 INFO listsdm	  18    ea21   E01       25.0      +033.54.08.0  -107.37.06.7 
2011-01-02 02:26:32 INFO listsdm	  19    ea22   N04       25.0      +033.53.59.2  -107.37.05.7 
2011-01-02 02:26:32 INFO listsdm	  20    ea23   E07       25.0      +033.54.06.1  -107.37.06.5 
2011-01-02 02:26:32 INFO listsdm	  21    ea24   W05       25.0      +033.53.56.5  -107.36.52.4 
2011-01-02 02:26:32 INFO listsdm	  22    ea25   N02       25.0      +033.53.57.8  -107.37.13.0 
2011-01-02 02:26:32 INFO listsdm	  23    ea26   W03       25.0      +033.54.03.5  -107.37.06.2 
2011-01-02 02:26:32 INFO listsdm	  24    ea27   E03       25.0      +033.54.00.1  -107.37.08.9 
2011-01-02 02:26:32 INFO listsdm	  25    ea28   N08       25.0      +033.54.00.5  -107.37.02.8

An entry from the scan dictionary: 

CASA <16>: myScanDict
  Out[16]: 
{1: {'baseband': ['BB_4', 'BB_8'],
     'chanwidth': [2000000.0, 2000000.0],
     'end': '2010/06/21/12:28:05.36',
     'field': 0,
     'intent': 'CALIBRATE_PHASE',
     'nchan': [64, 64],
     'nsubs': 1,
     'reffreq': [1388000000.0, 1756000000.0],
     'source': 'J2038+5119',
     'spws': [0, 1],
     'start': '2010/06/21/12:27:08.17',
     'timerange': '2010/06/21/12:27:08.17~2010/06/21/12:28:05.36'},
Retrieved from "https://casaguides.nrao.edu/index.php?title=CASA_EVLA_Scripts&oldid=4457"