Lstrange

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Return to Analysis Utilities

This page documents the lstrange function of Python module analysisUtils.

Sometimes it is useful to know the LST range over which your ms was run. For example, this information is useful to the JAO data reduction scientist who can request a certain LST for the next execution of your SB. This command will do that, along with providing the UT and MJD and duration. The only parameter is the ms name. It will calculate the range for the entire ms, and then calculate the range restricted to the scans with ON_SOURCE intent. It also lists the range of elevations ON_SOURCE, and a one-line summary that can be pasted into a table on the SCOPS wikipages.

Example

aU.lstrange('uid___A002_X2eea47_X1e0.ms')
Found observatory = ALMA 
Running ValueMapping... (this may take a minute) 
Ignoring spectral window [0, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37] because it is WVR related
Found scans =  [ 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27]
On source scans =  [15 18 22 25]
LST range of whole SB = 19.56 to 20.75 = 19:33 to 20:45 (71.4 minutes)
MJD range of whole SB = 55854.9226 to 55854.9721
 UT range of whole SB = 2011-10-20 22:08:36 UT to 2011-10-20 23:19:49 UT
LST range on source = 20.20 to 20.71 = 20:12 to 20:42 (30.4 minutes)
MJD range on source = 55854.9493 to 55854.9704
 UT range on source = 2011-10-20 22:47:02 UT to 2011-10-20 23:17:24 UT