ডিপথট:Polarization leakage caused by mere inclusion of beam

ডিপথট থেকে

Sky model:

 0 # (Name, Type, RA, DEC, I, Q, U, V, MajorAxis, MinorAxis, Orientation, ReferenceFrequency='150e6', SpectralIndex='[-0.75]') = format
 1 WNB0757.8+5018, POINT, 8:1:35.64, +50.9.45.7, 11.4401313481, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 2 WNB0803.0+4850, GAUSSIAN, 8:6:44.53, +48.41.46.7, 5.53433765965, 0, 0, 0, 114, 55, 152, 150e6, [-0.75]
 3 WNB0810.9+4605, POINT, 8:14:29.71, +45.56.46.1, 9.59535212821, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 4 WNB0816.0+5241, POINT, 8:19:47.66, +52.32.29.7, 10.7686531422, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 5 WNB0818.0+4712, POINT, 8:21:33.69, +47.2.34.8, 10.6347146703, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 6 WNB0818.9+5122, POINT, 8:22:36.88, +51.12.29.3, 5.83257399046, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 7 WNB0827.1+4553, POINT, 8:30:35.78, +45.43.30.5, 5.44504534504, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]
 8 WNB0829.6+5113, GAUSSIAN, 8:33:18.85, +51.3.14.2, 7.14338516896, 0, 0, 0, 4949, 85, 54, 150e6, [-0.75]
 9 WNB0829.6+5113A, GAUSSIAN, 8:33:18.84, +51.3.14.2, 7.14338516896, 0, 0, 0, 3773, 0, 0, 150e6, [-0.75]
10 WNB0835.9+5034, POINT, 8:39:30.77, +50.24.19.2, 5.40039918773, 0, 0, 0, 0, 0, 0, 150e6, [-0.75]

The parset used to predict without including beam in BBS:

Strategy.InputColumn = DATA
Strategy.ChunkSize = 300
Strategy.Baseline = [CR]S*&
Strategy.Steps = [predict]
Step.predict.Operation = PREDICT
Step.predict.Model.Sources = []
Step.predict.Output.Column = DATA_BEAM_DISABLED

The parset used to predict including beam in BBS:

Strategy.InputColumn = DATA
Strategy.ChunkSize = 300
Strategy.Baseline = [CR]S*&
Strategy.Steps = [predict]
Step.predict.Operation = PREDICT
Step.predict.Model.Sources = []
Step.predict.Model.Beam.Enable = T
Step.predict.Output.Column = DATA_BEAM_ENABLED

Then the predictions were run:

0 ms=ms/3C196.test.beam.polarization.MS
1 rm -rf $ms
2 echo ... creating $ms
3 cp -r ms/3C196.root.MS $ms
4 echo ... predicting without beam in DATA_BEAM_DISABLED of $ms
5 calibrate-stand-alone -v -f $ms pset/sim.DATA_BEAM_DISABLED.pset sky/3C196.sky.mock &> log/3C196.test.BEAM_DISABLED.log
6 echo ... predicting with beam in DATA_BEAM_ENABLED of $ms
7 calibrate-stand-alone -v -f $ms pset/sim.DATA_BEAM_ENABLED.pset sky/3C196.sky.mock &> log/3C196.test.BEAM_ENABLED.log