listcal
- listcal(vis, caltable, field='', antenna='', spw='', listfile='', pagerows=50)[source]
List antenna gain solutions
[Description] [Examples] [Development] [Details]
- Parameters
vis (path) - Name of input visibility file
caltable (path) - Input calibration table to list
field (string=’’) - Field name or index
antenna (string=’’) - Antenna name or index
spw (string=’’) - Spectral window and channel
listfile (string=’’) - Disk file to write output
pagerows (int=50) - Rows per page
- Description
This task lists antenna gain solutions in tabular form. The table is organized as follows. Solutions are output by
Spectral window
Antenna
Time
Channel
and Polarization
where the inner-most loop is over polarization.
The listcal output table contains two table headers. The top-level header is printed each time the spectral window changes. This header lists the spectral window ID (SpwID), the date of observation (Date), the calibration table name (CalTable), and the measurement set name (MS name).
A lower-level header is printed when the top-level header is printed, when the antenna names change, and for every pagerows of output. The lower-level header columns are described here:
Column name
Description
Ant
Antenna name (contains sub-columns: Amp, Phs, F)
Time
Visibility timestamp corresponding to gain solution
Field
Field name
Chn
Channel number
Amp
Complex solution amplitude
Phs
Complex solution phase
F
Flag
Elements of the “F” column contain an ‘F’ when the datum is flagged, and ‘’ (whitespace) when the datum is not flagged. Presently, the polarization mode names (for example: R, L) are not given, but the ordering of the polarization modes (left-to-right) is equivalent to the order output by task listobs (see “Feeds” in listobs output).
Parameter descriptions
vis
Name of input visibility file. Default: none. Examples: vis=’ngc5921.ms’
caltable
Name of input calibration table. Default: none. Examples: caltable=’ngc5921.gcal’
field
Select data based on field ID(s) or name(s). Default: ‘’ => all. Examples: field=’1’; field=’0~2’ field IDs inclusive from 0 to 2; field=’3C’* all field names starting with 3C
antenna
Select calibration data based on antenna. Default: ‘’ => all. Examples: antenna=’5’; antenna=’5,6’ antenna index 5 and 6 solutions; antenna=’VA05’,’VA06’ VLA antenna 5 and 6
spw
Select spectral window, channel to list. Default: ‘’ => all spws and channels. Examples: spw=’2:34’ spectral window 2, channel 34 (will only list one spw, one channel at a time)
listfile
Write output to disk (will not overwrite). Default: ‘’ => write to screen
pagerows
Rows per page of listing. Default: 50; pagerows=0 => do not paginate
- Examples
# Get path to CASA home dir pathname=os.environ.get('CASAPATH').split()[0] # Select uv-data (FITS) file fitsdata=pathname+'/data/demo/NGC5921.fits' # MS name; write to current directory msdata='NGC5921.ms' # import FITS data to MS importuvfits(fitsfile=fitsdata, vis=msdata) # Create model data for flux calibrator setjy(vis=msdata) # Calibration table name caldata=msdata+'.bcal' # Bandpass calibration bandpass(vis=msdata, caltable=caldata) # List a subset of calibration factors listcal(vis=msdata, caltable=caldata, field='N5921_2, 0, 1', antenna='1,2,5;10~14', spw='0:1,0:22~25', pagerows=0)
Example Output:
SpwID = 0, Date = 1995/04/13, CalTable = NGC5921.ms.bcal (B Jones), MS name = /users/jcrossle/NRAO/casa/NGC5921.ms ------------------------------------------------------------------------------------------------------------------------------------------------------- \| Ant = 1 \| Ant = 2 \| Ant = 5 \| Ant = 10 \| Time Field Chn| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F\| ----------|---------------|---|--------------|--------------|--------------|--------------|--------------|--------------|--------------|--------------\| 09:21:46.0 1331+30500002_0 1|0.165 7.9 0.117 21.3 0.168 98.8 0.161 -116.8 0.146 -24.6 0.153 -109.7 0.163 -158.6 0.139 3.9 10:05:27.9 1445+09900002_0 1|0.260 10.3 0.185 20.0 0.266 102.3 0.250 -116.1 0.233 -20.4 0.245 -108.6 0.255 -156.5 0.217 4.1 10:09:05.3 N5921_2 1|0.047 54.2 0.030 50.7 0.057 -64.6 0.041 36.5 0.050 93.5 0.035 -13.9 0.079 97.5 0.048 -107.0 \| Ant = 11 \| Ant = 12 \| Ant = 13 \| Ant = 14 \| Time Field Chn| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F\| ----------|---------------|---|--------------|--------------|--------------|--------------|--------------|--------------|--------------|--------------\| 09:21:46.0 1331+30500002_0 1|0.156 -112.6 0.128 -5.5 0.156 -178.4 0.169 -146.2 0.160 -177.4 0.148 -89.1 0.173 -117.0 0.145 141.5 10:05:27.9 1445+09900002_0 1|0.243 -110.6 0.199 -5.7 0.251 -175.4 0.272 -146.9 0.249 -175.0 0.238 -89.5 0.268 -113.5 0.228 142.5 10:09:05.3 N5921_2 1|0.054 47.1 0.056 105.5 0.042 -84.9 0.043 -18.9 0.058 72.4 0.055 155.6 0.040 -35.0 0.044 -153.6 SpwID = 0, Date = 1995/04/13, CalTable = NGC5921.ms.bcal (B Jones), MS name = /users/jcrossle/NRAO/casa/NGC5921.ms ------------------------------------------------------------------------------------------------------------------------------------------------------- \| Ant = 1 \| Ant = 2 \| Ant = 5 \| Ant = 10 \| Time Field Chn| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F\| ----------|---------------|---|--------------|--------------|--------------|--------------|--------------|--------------|--------------|--------------\| 09:21:46.0 1331+30500002_0 22|0.319 4.6 0.323 -6.8 0.311 109.6 0.315 -109.0 0.286 -26.8 0.324 -106.8 0.303 -146.6 0.303 4.3 09:21:46.0 1331+30500002_0 23|0.318 4.4 0.323 -6.8 0.309 109.7 0.315 -108.8 0.285 -26.8 0.325 -106.5 0.304 -146.2 0.304 4.6 09:21:46.0 1331+30500002_0 24|0.318 4.2 0.323 -6.6 0.309 109.8 0.316 -108.6 0.285 -26.8 0.324 -106.6 0.302 -146.1 0.304 5.0 09:21:46.0 1331+30500002_0 25|0.319 4.3 0.323 -6.6 0.308 109.5 0.315 -108.4 0.285 -26.7 0.323 -106.7 0.301 -145.9 0.303 5.1 10:05:27.9 1445+09900002_0 22|0.502 7.0 0.508 -7.9 0.483 112.2 0.499 -108.5 0.451 -24.2 0.515 -106.2 0.481 -144.1 0.489 4.6 10:05:27.9 1445+09900002_0 23|0.498 7.2 0.509 -8.2 0.489 112.6 0.502 -108.8 0.455 -23.9 0.513 -106.2 0.477 -144.0 0.480 5.0 10:05:27.9 1445+09900002_0 24|0.496 6.3 0.506 -7.1 0.487 111.9 0.502 -108.3 0.450 -23.8 0.517 -106.1 0.473 -144.6 0.478 4.0 10:05:27.9 1445+09900002_0 25|0.489 6.3 0.512 -8.2 0.483 113.0 0.498 -108.7 0.456 -24.3 0.507 -105.5 0.470 -144.4 0.476 4.3 10:09:05.3 N5921_2 22|0.089 53.9 0.084 38.8 0.135 -84.0 0.148 54.9 0.100 94.2 0.112 4.4 0.112 90.6 0.115 -124.0 10:09:05.3 N5921_2 23|0.068 50.4 0.073 31.5 0.117 -80.7 0.150 50.5 0.103 90.3 0.120 2.6 0.104 103.6 0.104 -121.5 10:09:05.3 N5921_2 24|0.068 51.4 0.080 45.1 0.125 -89.0 0.146 47.3 0.106 99.9 0.122 8.8 0.102 95.9 0.099 -121.4 10:09:05.3 N5921_2 25|0.060 45.8 0.060 42.5 0.124 -85.4 0.146 47.8 0.110 93.4 0.125 7.2 0.088 100.9 0.096 -115.9 \| Ant = 11 \| Ant = 12 \| Ant = 13 \| Ant = 14 \| Time Field Chn| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F| Amp Phs F Amp Phs F\| ----------|---------------|---|--------------|--------------|--------------|--------------|--------------|--------------|--------------|--------------\| 09:21:46.0 1331+30500002_0 22|0.302 -99.8 0.301 -10.5 0.341 169.8 0.350 -137.6 0.306 -167.6 0.308 -84.8 0.319 -103.6 0.316 143.7 09:21:46.0 1331+30500002_0 23|0.301 -99.9 0.302 -10.6 0.341 169.7 0.349 -138.0 0.306 -167.4 0.307 -84.5 0.318 -103.6 0.316 143.8 09:21:46.0 1331+30500002_0 24|0.300 -100.0 0.301 -10.9 0.342 169.6 0.348 -138.4 0.305 -167.4 0.306 -84.3 0.319 -103.4 0.317 143.4 09:21:46.0 1331+30500002_0 25|0.301 -100.1 0.300 -11.0 0.339 169.9 0.347 -138.5 0.305 -167.4 0.306 -84.0 0.317 -103.2 0.315 143.5 10:05:27.9 1445+09900002_0 22|0.478 -97.3 0.482 -9.7 0.535 171.3 0.544 -138.1 0.480 -165.1 0.487 -86.0 0.502 -100.2 0.503 144.6 10:05:27.9 1445+09900002_0 23|0.481 -97.4 0.479 -10.4 0.531 171.4 0.549 -138.9 0.483 -165.3 0.489 -84.3 0.498 -99.7 0.501 144.7 10:05:27.9 1445+09900002_0 24|0.482 -97.6 0.484 -10.1 0.532 172.7 0.544 -139.3 0.489 -165.3 0.476 -84.6 0.498 -100.3 0.502 144.6 10:05:27.9 1445+09900002_0 25|0.479 -98.4 0.484 -10.1 0.534 172.4 0.553 -139.0 0.481 -165.4 0.479 -84.3 0.498 -100.3 0.497 145.0 10:09:05.3 N5921_2 22|0.127 44.8 0.142 128.9 0.090 -94.4 0.090 -48.5 0.112 41.3 0.103 109.0 0.075 7.2 0.095 -120.1 10:09:05.3 N5921_2 23|0.135 43.1 0.132 126.0 0.087 -89.3 0.103 -38.2 0.112 39.3 0.100 117.8 0.076 -3.4 0.098 -113.5 10:09:05.3 N5921_2 24|0.135 49.4 0.137 136.1 0.092 -95.9 0.084 -42.7 0.104 49.9 0.120 117.6 0.087 2.9 0.097 -121.2 10:09:05.3 N5921_2 25|0.144 49.8 0.119 130.0 0.086 -96.5 0.074 -42.8 0.109 41.5 0.124 120.8 0.087 0.4 0.104 -117.3 Listed 120 antenna solutions.
- Development
No additional development details
- Parameter Details
Detailed descriptions of each function parameter
vis (path)- Name of input visibility filecaltable (path)- Input calibration table to listfield (string='')- Field name or indexantenna (string='')- Antenna name or indexspw (string='')- Spectral window and channellistfile (string='')- Disk file to write outputpagerows (int=50)- Rows per page