...
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
0 1 16 30 31 |
Selecting only the last 38% of the observation for calibration
One of the parameters passed to the RTS is the "basename" of the files containing the visibilities. In order to distinguish between the RFI-ridden visibilities and the clean ones, I will create soft links to the clean gpubox files (created in an earlier step) and change the case of the filenames (gpubox → GPUBOX). The first and last filenames are 1318345216_20111011150016_gpubox01_00.fits and 1318345216_20111011151015_gpubox12_00.fits, with the timestamp in the format YYYYMMDDHHMMSS. To get the last 38%, I need to start 6:12 (mm:ss) into the observation, which means that my first clean file will be 1318345216_20111011150628_gpubox01_00.fits.
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
$ cd /astro/mwavcs/vcs/1318345216/cal/1318345216/vis
$ ls 1318345216_2011101115062[89]_gpubox*.fits 1318345216_201110111506[3-5]?_gpubox*.fits 1318345216_20111011150[7-9]??_gpubox*.fits 1318345216_20111011151???_gpubox*.fits | while read f; do ln -s ${f} $(echo ${f} | tr 'gpubox' 'GPUBOX'); done |
After doing this, the RTS ".in" file must be altered so that it's only looking for files with GPUBOX in the filename (see below).
Extra flags
After running the RTS (see below) and checking the solutions (using the python scripts supplied in VCSTools), I found that I also had to add 14 to the list of flagged channels, and 52, 53, 54, 59 and 61 to the list of flagged tiles.
...
| Code Block | ||||||||
|---|---|---|---|---|---|---|---|---|
| ||||||||
ReadAllFromSingleFile= BaseFilename=/astro/mwavcs/vcs/1318345216/cal/1318345216/vis/*_gpuboxGPUBOX ReadGpuboxDirect=0 UseCorrelatorInput=1 ReadMetafitsFile=1 MetafitsFilename=/astro/mwavcs/vcs/1318345216/1318345216 DoCalibration= doMWArxCorrections=1 doRawDataCorrections=1 doRFIflagging=0 useFastPrimaryBeamModels=0 generateDIjones=1 applyDIcalibration=1 UsePacketInput=0 UseThreadedVI=1 MaxFrequency=170.24 ObservationFrequencyBase=138.895 ObservationTimeBase=2455846.1252314816 ObservationPointCentreHA=-0.35952189154909175 ObservationPointCentreDec=-5.98757073636307 ChannelBandwidth=0.04 NumberOfChannels=32 CorrDumpsPerCadence=128 CorrDumpTime=1.0 NumberOfIntegrationBins=6 NumberOfIterations=1 StartProcessingAt=0 ArrayPositionLat=-26.7033194 ArrayPositionLong=116.6708152 ArrayNumberOfStations=128 ArrayFile= SourceCatalogueFile=/astro/mwavcs/vcs/1318345216/cal/1318345216/srclist_pumav3_EoR0aegean_EoR1pietro+ForA_1318345216_patch1000.txt NumberOfCalibrators=1 NumberOfSourcesToPeel=0 calBaselineMin=20.0 calShortBaselineTaper=40.0 FieldOfViewDegrees=1 |
...