[evlatests] [JIRA] Updated: (ECDATA-3) OSRO-1 mode WICloop test
Steve Myers (JIRA)
jira at nrao.edu
Mon Mar 1 20:14:52 EST 2010
[ https://bugs.aoc.nrao.edu/browse/ECDATA-3?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Myers updated ECDATA-3:
-----------------------------
Attachment: (was: run_62_2_sb166651_1.55255.200106909724.py)
> OSRO-1 mode WICloop test
> ------------------------
>
> Key: ECDATA-3
> URL: https://bugs.aoc.nrao.edu/browse/ECDATA-3
> Project: EVLA Commissioning Data
> Issue Type: Task
> Components: OSRO
> Affects Versions: Q1 2010
> Reporter: Steve Myers
> Assignee: Joseph P. McMullin
> Attachments: run_62_2_sb166651_1.55255.200106909724.py
>
>
> Date: Sat, 27 Feb 2010 23:18:11 -0700 (MST)
> From: Michael Rupen <mrupen at aoc.nrao.edu>
> To: Vivek Dhawan <vdhawan at aoc.nrao.edu>
> Cc: Steven Myers <smyers at aoc.nrao.edu>, jvangork at astro.columbia.edu,
> Ken Sowinski <ksowinsk at aoc.nrao.edu>
> Subject: WICloop OSRO1 test
> Hi folks --
> please have a look at
> /home/casa-dev-11-2/mrupen/WIDAR0/62_2_sb166651_1.55255.200106909724*
> Same questions as before.
> p.s. Note the UVFLG table with the obvious name, for AIPS folks.
> This includes the 1sec rounding Vivek requested.
> ================================================================================
> Date: Sat, 27 Feb 2010 23:41:21 -0700
> From: Vivek Dhawan <vdhawan at aoc.nrao.edu>
> To: Michael Rupen <mrupen at aoc.nrao.edu>
> Cc: Steven Myers <smyers at aoc.nrao.edu>, jvangork at astro.columbia.edu,
> Ken Sowinski <ksowinsk at aoc.nrao.edu>
> Subject: Re: WICloop OSRO1 test
> OK I took a quick look -
> 1. Flags work perfectly with the new 1s rounding built in.
> (read in with INTEXT='' in uvflg).
> The first scan had no bad data, so I dont know if the first
> scan is actually caught by the flag or just happened to be
> good this time. it usually (~6 times I tried this before)
> has some bad data that the flags miss.
> 2. Ant 3 is showing occasional phase jumps, whole scans are offset
> by a ~40 degrees on about 5 occasions, always the same offset,
> sometimes on one source, sometimes the other.
> more manana.
> ================================================================================
> Date: Sun, 28 Feb 2010 16:30:08 -0700
> From: Vivek Dhawan <vdhawan at aoc.nrao.edu>
> To: Michael Rupen <mrupen at aoc.nrao.edu>
> Cc: Steven Myers <smyers at aoc.nrao.edu>, jvangork at astro.columbia.edu,
> Ken Sowinski <ksowinsk at aoc.nrao.edu>
> Subject: Re: WICloop OSRO1 test
> /home/casa-dev-11-2/mrupen/WIDAR0/62_2_sb166651_1.55255.200106909724*
> more on this: data very clean (except for the 11s modulation).
> easy to get 20K:1 dynamic range on primary 4Jy source in Ipol
> (noise 0.2mJy) and V has 0.13mJy rms. So I think all is well
> at least to 1st order, despite the wobbles.
> The 11s modulation continues, in every dataset from yesterday.
> Went back to Feb 20th WIC loops, it is present.
> Went back to ORION data (Dec 20) its present at same period
> but low intensity (that was K band). So its been with us a while.
> It looks more like a comb at 90mHz than a sinusoid.
> On previous occasions when Rick or I have reported wobbles, we
> have not seen this one. We have seen 9.6Hz (noise diode switching)
> and might expect to see (but have not seen) gain modulation at the
> cryopump cycles 1.2Hz for model 350 (Cband) or 3.5Hz on model 22.
> But this is 1s integration, and those are too fast.
> Then Ken came by and said they had reverted to the older CBE, so
> the global fix for PHNEG in the CBE should be re-examined again
> to ensure its it is still fixed. with point sources at the center
> I cannot do this on current data.
> ================================================================================
> Date: Mon, 1 Mar 2010 18:12:10 -0700 (MST)
> From: Steven T. Myers <smyers at aoc.nrao.edu>
> To: evlatests at aoc.nrao.edu
> Subject: Re: More data from the weekend
> Note that in reducing this dataset, I had
> to flag shadowed data otherwise I got low-level stripes
> across the image. Updated the ECDATA entries in JIRA
> to reflect this. So watch out for this since the filler
> does not automagically flag shadowed data.
> ================================================================================
> Data reduction in CASA by S. Myers
> ================================================================================
> SDM: 62_2_sb166651_1.55255.200106909724 (from /home/casa-dev-11-2/mrupen/WIDAR0/)
> Data location: /home/dubhe/smyers/OSRO1
> Script: run_62_2_sb166651_1.55255.200106909724.py
> Results: test_62_2_sb166651_1.55255.200106909724.*
> Plots: test_62_2_sb166651_1.55255.200106909724.*.png
> Data Quality: ea13 no C-band, ea05 RR bad delays
> ea03 spw 0 has phase offsets for some scans
> baselines ea03&ea26 and ea18&ea26 spw 1 LL low amplitude
> ea06 spw 1 RR amplitude jumps of 10% from scan to scan (and inside
> long second scan)
> Note: there are occasional zeroes. Also, because the two sub-bands are from
> different basebands, there is no phase connection across them (even though
> they are adjacent) and the delays in 2nd sub-band/baseband are higher than
> the first.
> IMPORTANT: There was shadowed data. Flagged these at 28m. This made a huge
> difference in image residuals. This gets rid of ea04, ea21, ea25.
> Calibration:
> No issues. Assumed J0217+7349 was 1.0 Jy.
> No blcal. Bandpass, Amp, Phase transferred from Field 0 to Field 1.
> Image Quality:
> Note rms values assume peak of Field 0 is 1.0Jy, so they equate to dynamic
> range.
> MFS imaging using spw 0~1 channels 5~58 (single bandpass)
> Field 0 I Dynamic Range = 19356.2534476 rms = 5.16616586392e-05
> Field 0 Q Dynamic Range = 4.39486633138 rms = 9.75763819151e-06
> Field 0 U Dynamic Range = 4.94809116389 rms = 1.14246332914e-05
> Field 0 V Dynamic Range = 4.94443166597 rms = 4.62673627572e-05
> Field 1 I Dynamic Range = 627.555085426 rms = 0.000369460867849
> Field 1 Q Dynamic Range = 50.4474110459 rms = 1.36520711899e-05
> Field 1 U Dynamic Range = 12.1297112001 rms = 1.45723013513e-05
> Field 1 V Dynamic Range = 11.9784033376 rms = 2.00004796335e-05
> MFS imaging per spw using channels 5~58 (single bandpass)
> Field 0 SPW 0 I: Dynamic Range = 14797.4038361 rms = 6.75782942588e-05
> Field 0 SPW 0 Q: Dynamic Range = 4.78529919117 rms = 1.44220366606e-05
> Field 0 SPW 0 U: Dynamic Range = 5.43768985032 rms = 1.81858683123e-05
> Field 0 SPW 0 V: Dynamic Range = 4.98924171613 rms = 6.48050703582e-05
> Field 0 SPW 1 I: Dynamic Range = 15464.0612059 rms = 6.46647746104e-05
> Field 0 SPW 1 Q: Dynamic Range = 4.08099495118 rms = 1.1736764402e-05
> Field 0 SPW 1 U: Dynamic Range = 3.91210634893 rms = 1.24839503083e-05
> Field 0 SPW 1 V: Dynamic Range = 4.53518880195 rms = 5.24262052181e-05
> Field 1 SPW 0 I: Dynamic Range = 429.895429178 rms = 0.000545802304846
> Field 1 SPW 0 Q: Dynamic Range = 99.2571900833 rms = 1.24883022717e-05
> Field 1 SPW 0 U: Dynamic Range = 15.3842806747 rms = 2.03231779537e-05
> Field 1 SPW 0 V: Dynamic Range = 8.59852691546 rms = 2.56669663208e-05
> Field 1 SPW 1 I: Dynamic Range = 795.508815204 rms = 0.000287439914501
> Field 1 SPW 1 Q: Dynamic Range = 4.73580501848 rms = 1.30791014691e-05
> Field 1 SPW 1 U: Dynamic Range = 3.95838719889 rms = 1.26754451362e-05
> Field 1 SPW 1 V: Dynamic Range = 10.1812603233 rms = 2.56592315735e-05
> Note: residual Field 1 image dominated by secondary source to SE
> NOTE: I originally did not get good results, but this was due to shadowing.
> ================================================================================
> Questions:
> * Does the archive work? :)
> We started from your data.
> * Any missing data?
> No missing data that should be there, though two baselines had no signal (see
> above).
> * Can you derive gains (amp, phase, delay)? i.e., is closure maintained?
> Yes, once above noted issues were edited out. Closure is not so clear, as
> there are outlier blcal solutions, see:
> test_62_2_sb166651_1.55255.200106909724.blcal1.*.png
> * Bandpasses roughly reasonable?
> Yes.
> * All expected tables making their way into CASA/AIPS? I guess this
> is mostly the weather table at the moment -- dull but oh well.
> CASA MS is ok. Others seem to get stuff into AIPS ok.
> * Are you able to make quality images of the data?
> Yes, around 19K:1. Flagging of shadowed data was necessary.
> =================================================================================
> CASA MS listing:
> MeasurementSet Name: /home/dubhe/smyers/OSRO1/62_2_sb166651_1.55255.200106909724.ms
> MS Version 2
> ================================================================================
> Observer: 62_2_sb166651_1 Project: T.B.D.
> Observation: EVLA
> Data records: 1047926 Total integration time = 2070 seconds
> Observed from 28-Feb-2010/04:50:00.5 to 28-Feb-2010/05:24:30.5 (UTC)
> ObservationID = 0 ArrayID = 0
> Date Timerange (UTC) Scan FldId FieldName nVis Int(s) SpwIds
> 28-Feb-2010/04:50:00.5 - 04:50:59.5 1 0 J0217+7349 30360 1 [0, 1]
> 04:51:00.5 - 04:56:05.5 2 0 J0217+7349 154836 1 [0, 1]
> 04:56:06.5 - 04:57:35.5 3 0 J0217+7349 45540 1 [0, 1]
> 04:57:36.5 - 04:59:05.5 4 1 J0157+7442 45540 1 [0, 1]
> 04:59:06.5 - 05:00:34.5 5 0 J0217+7349 45034 1 [0, 1]
> 05:00:35.5 - 05:02:04.5 6 1 J0157+7442 45540 1 [0, 1]
> 05:02:05.5 - 05:03:34.5 7 0 J0217+7349 45540 1 [0, 1]
> 05:03:35.5 - 05:05:04.5 8 1 J0157+7442 45540 1 [0, 1]
> 05:05:05.5 - 05:06:33.5 9 0 J0217+7349 45034 1 [0, 1]
> 05:06:34.5 - 05:08:03.5 10 1 J0157+7442 45540 1 [0, 1]
> 05:08:04.5 - 05:09:33.5 11 0 J0217+7349 45540 1 [0, 1]
> 05:09:34.5 - 05:11:03.5 12 1 J0157+7442 45540 1 [0, 1]
> 05:11:04.5 - 05:12:32.5 13 0 J0217+7349 45034 1 [0, 1]
> 05:12:33.5 - 05:14:02.5 14 1 J0157+7442 45540 1 [0, 1]
> 05:14:03.5 - 05:15:32.5 15 0 J0217+7349 45540 1 [0, 1]
> 05:15:33.5 - 05:17:02.5 16 1 J0157+7442 45540 1 [0, 1]
> 05:17:03.5 - 05:18:31.5 17 0 J0217+7349 45034 1 [0, 1]
> 05:18:32.5 - 05:20:01.5 18 1 J0157+7442 45540 1 [0, 1]
> 05:20:02.5 - 05:21:31.5 19 0 J0217+7349 45540 1 [0, 1]
> 05:21:32.5 - 05:23:01.5 20 1 J0157+7442 45540 1 [0, 1]
> 05:23:02.5 - 05:24:30.5 21 0 J0217+7349 45034 1 [0, 1]
> (nVis = Total number of time/baseline visibilities per scan)
> Fields: 2
> ID Code Name RA Decl Epoch SrcId nVis
> 0 Z J0217+7349 02:17:30.8134 +73.49.32.6218 J2000 0 638066
> 1 NONE J0157+7442 01:57:34.9649 +74.42.43.2300 J2000 1 409860
> (nVis = Total number of time/baseline visibilities per field)
> Spectral Windows: (2 unique spectral windows and 1 unique polarization setups)
> SpwID #Chans Frame Ch1(MHz) ChanWid(kHz)TotBW(kHz) Ref(MHz) Corrs
> 0 64 TOPO 4832 2000 128000 4832 RR RL LR LL
> 1 64 TOPO 4960 2000 128000 4960 RR RL LR LL
> Sources: 4
> ID Name SpwId RestFreq(MHz) SysVel(km/s)
> 0 J0217+7349 0 - -
> 0 J0217+7349 1 - -
> 1 J0157+7442 0 - -
> 1 J0157+7442 1 - -
> Antennas: 23:
> ID Name Station Diam. Long. Lat.
> 0 ea01 W09 25.0 m -107.37.25.2 +33.53.51.0
> 1 ea02 E02 25.0 m -107.37.04.4 +33.54.01.1
> 2 ea03 E09 25.0 m -107.36.45.1 +33.53.53.6
> 3 ea04 W01 25.0 m -107.37.05.9 +33.54.00.5
> 4 ea05 W08 25.0 m -107.37.21.6 +33.53.53.0
> 5 ea06 N03 25.0 m -107.37.06.3 +33.54.04.8
> 6 ea07 N06 25.0 m -107.37.06.9 +33.54.10.3
> 7 ea08 N01 25.0 m -107.37.06.0 +33.54.01.8
> 8 ea09 E06 25.0 m -107.36.55.6 +33.53.57.7
> 9 ea11 E04 25.0 m -107.37.00.8 +33.53.59.7
> 10 ea13 N07 25.0 m -107.37.07.2 +33.54.12.9
> 11 ea14 E05 25.0 m -107.36.58.4 +33.53.58.8
> 12 ea15 W06 25.0 m -107.37.15.6 +33.53.56.4
> 13 ea16 W02 25.0 m -107.37.07.5 +33.54.00.9
> 14 ea18 N09 25.0 m -107.37.07.8 +33.54.19.0
> 15 ea20 N05 25.0 m -107.37.06.7 +33.54.08.0
> 16 ea21 E01 25.0 m -107.37.05.7 +33.53.59.2
> 17 ea23 E07 25.0 m -107.36.52.4 +33.53.56.5
> 18 ea24 W05 25.0 m -107.37.13.0 +33.53.57.8
> 19 ea25 N02 25.0 m -107.37.06.2 +33.54.03.5
> 20 ea26 W03 25.0 m -107.37.08.9 +33.54.00.1
> 21 ea27 E03 25.0 m -107.37.02.8 +33.54.00.5
> 22 ea28 N08 25.0 m -107.37.07.5 +33.54.15.8
> ================================================================================
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