[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: run_62_2_sb166651_1.55255.200106909724.py
Description:
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
================================================================================
was:
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.
================================================================================
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.
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 = 9054.79202265 rms = 0.000110436534724
Field 0 Q Dynamic Range = 2.9280337055 rms = 1.99786065843e-05
Field 0 U Dynamic Range = 2.49427359034 rms = 2.92818199436e-05
Field 0 V Dynamic Range = 4.45359917655 rms = 5.04957792618e-05
Field 1 I Dynamic Range = 614.047517597 rms = 0.000376128305406
Field 1 Q Dynamic Range = 32.6405044266 rms = 2.02574437923e-05
Field 1 U Dynamic Range = 4.64775692116 rms = 3.10146837626e-05
Field 1 V Dynamic Range = 7.25633720395 rms = 3.29846386619e-05
MFS imaging per spw using channels 5~58 (single bandpass)
Field 0 SPW 0 I: Dynamic Range = 7572.41404201 rms = 0.000132056858752
Field 0 SPW 0 Q: Dynamic Range = 2.71873330709 rms = 3.60361505839e-05
Field 0 SPW 0 U: Dynamic Range = 2.22703574297 rms = 5.46838867614e-05
Field 0 SPW 0 V: Dynamic Range = 5.40130524124 rms = 6.70027903795e-05
Field 0 SPW 1 I: Dynamic Range = 9941.74490039 rms = 0.000100583830179
Field 0 SPW 1 Q: Dynamic Range = 4.38062636114 rms = 1.02479650131e-05
Field 0 SPW 1 U: Dynamic Range = 3.86252534025 rms = 1.08573142821e-05
Field 0 SPW 1 V: Dynamic Range = 4.50769461851 rms = 5.07692384152e-05
Note: residual Field 0 images have large-scale ripples
Field 1 SPW 0 I: Dynamic Range = 468.572660871 rms = 0.000498839655064
Field 1 SPW 0 Q: Dynamic Range = 37.0233517634 rms = 3.21861487906e-05
Field 1 SPW 0 U: Dynamic Range = 4.27430729033 rms = 5.6950463916e-05
Field 1 SPW 0 V: Dynamic Range = 5.79425842634 rms = 4.091789185e-05
Field 1 SPW 1 I: Dynamic Range = 715.622471788 rms = 0.000318081992527
Field 1 SPW 1 Q: Dynamic Range = 5.57176302583 rms = 1.15475742614e-05
Field 1 SPW 1 U: Dynamic Range = 4.26655584357 rms = 1.08406162858e-05
Field 1 SPW 1 V: Dynamic Range = 7.92417523809 rms = 3.0834202087e-05
Note: residual Field 1 image looks better, secondary source to SE dominates
residual
Upshot: the two spw do not combine together well. Does this have to do with
the fact they come from different basebands?
NOTE: I do not seem to get as good a results as Vivek, this is worth further
investigation.
================================================================================
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?
Combining the two sub-bands/basebands seems problematic.
=================================================================================
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
================================================================================
updated script and reported values to include flagging of shadowed data. Now get comparable results to Vivek.
> 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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