[daip] Flux calibrator model problems with U-band VLA-only observations?
Jeff Mangum
jmangum at nrao.edu
Thu Jun 26 20:55:53 EDT 2008
Thanks Amy. I will likely try both solutions. Why would my
single-frequency observations end-up with two FREQIDs?
-- Jeff
On 6/26/08 7:11 PM, Amy Mioduszewski wrote:
> Hi Jeff,
>
> O.K., I down loaded your data and when I ran CALIB on 3C286 it dies
> with or without the model, with 3C48 CALIB worked with or without the
> model. So the problem did not seem to be the model.
>
> So, after much fooling around I discover that your data has 2 FREQIDs
> and 3C268 is under FREQID 2. So you can either load the data into
> different files for the different FREQIDs (which I would recommend
> since they are different sources), or use the FREQID parameter.
>
> Sorry that took so long.
>
> Amy
>
> Jeff Mangum wrote:
>> Thanks Amy. -- Jeff
>>
>> On 6/25/08 10:50 AM, Amy Mioduszewski wrote:
>>> I will work on it this week.
>>>
>>> Amy
>>>
>>> Jeff Mangum wrote:
>>>> Hi Amy,
>>>>
>>>> Any ideas as to what is going on with these data? I still have
>>>> been unsuccessful at processing them, and I have another block of
>>>> similar data that I would like to check-out once the current
>>>> problem is resolved. Thanks!
>>>>
>>>> -- Jeff
>>>>
>>>> On 5/19/08 3:53 PM, Jeff Mangum wrote:
>>>>> ok. I am still banking on something stupid on my end.
>>>>> Note, though, that the data is odd by VLA standards. Only 14
>>>>> antennas (VLA antennas only; U-band).
>>>>>
>>>>> -- Jeff
>>>>>
>>>>> On 5/19/08 3:51 PM, Amy Mioduszewski wrote:
>>>>>> Hi Jeff,
>>>>>>
>>>>>> Well your error message, or I should say lack of error message,
>>>>>> is very odd. We wonder if you tickled an obscure bug somewhere.
>>>>>>
>>>>>> Amy
>>>>>>
>>>>>> Jeff Mangum wrote:
>>>>>>> Hi Amy,
>>>>>>>
>>>>>>> On 5/19/08 12:06 PM, Amy Mioduszewski wrote:
>>>>>>>> Those look O.K.. I think I am actually going to have to look
>>>>>>>> at your data. Could you put it somewhere I can ftp it?
>>>>>>> Yup. I have put the archive files at
>>>>>>> http://www.cv.nrao.edu/~jmangum/AM941. Let me know when you
>>>>>>> have them as I would like to free-up the disk space.
>>>>>>>> Thanks!
>>>>>>> Thank you! I fully expect that I am doing something stupid.
>>>>>>> One thing that crosses my mind is the change from visibilities
>>>>>>> to raw correlation coefficients may be tripping me up, although
>>>>>>> I would have expected a more informative warning if this was the
>>>>>>> case.
>>>>>>>
>>>>>>> -- Jeff
>>>>>>>> Amy
>>>>>>>>
>>>>>>>> Jeff Mangum wrote:
>>>>>>>>> Here you go...
>>>>>>>>>
>>>>>>>>> -- Jeff
>>>>>>>>>
>>>>>>>>> >inp calib
>>>>>>>>> AIPS 1: CALIB: Task to determine calibration for data.
>>>>>>>>> AIPS 1: Adverbs Values Comments
>>>>>>>>> AIPS 1:
>>>>>>>>> ----------------------------------------------------------------
>>>>>>>>> AIPS 1: Input uv data.
>>>>>>>>> AIPS 1: INNAME '20080223' UV file name (name)
>>>>>>>>> AIPS 1: INCLASS 'CH 0' UV file name
>>>>>>>>> (class)
>>>>>>>>> AIPS 1: INSEQ 1 UV file name
>>>>>>>>> (seq. #)
>>>>>>>>> AIPS 1: INDISK 1 UV file disk
>>>>>>>>> drive #
>>>>>>>>> AIPS 1: Data selection
>>>>>>>>> (multisource):
>>>>>>>>> AIPS 1: CALSOUR '1331+305' Calibrator sources
>>>>>>>>> AIPS 1: *rest ' '
>>>>>>>>> AIPS 1: QUAL -1 Calibrator
>>>>>>>>> qualifier -1=>all
>>>>>>>>> AIPS 1: CALCODE ' ' Calibrator code
>>>>>>>>> ' '=>all
>>>>>>>>> AIPS 1: SELBAND -1 Bandwidth to select
>>>>>>>>> (kHz)
>>>>>>>>> AIPS 1: SELFREQ -1 Frequency to select
>>>>>>>>> (MHz)
>>>>>>>>> AIPS 1: FREQID 1 Freq. ID to select.
>>>>>>>>> AIPS 1: TIMERANG *all 0 Time range to use.
>>>>>>>>> AIPS 1: BCHAN 1 Lowest channel
>>>>>>>>> number 0=>all
>>>>>>>>> AIPS 1: ECHAN 0 Highest channel number
>>>>>>>>> AIPS 1: ANTENNAS *all 0 Antennas to select.
>>>>>>>>> 0=all
>>>>>>>>> AIPS 1: DOFIT *all 0 Subset of ANTENNAS
>>>>>>>>> list for
>>>>>>>>> AIPS 1: ** press RETURN for more, enter Q or next line to quit
>>>>>>>>> print **
>>>>>>>>> #
>>>>>>>>> AIPS 1: which solns are
>>>>>>>>> desired.
>>>>>>>>> AIPS 1: ANTUSE *all 0 Mean gain is
>>>>>>>>> calculated
>>>>>>>>> AIPS 1: (CPARM(2)>0) using
>>>>>>>>> only the
>>>>>>>>> AIPS 1: listed antennas.
>>>>>>>>> See explain.
>>>>>>>>> AIPS 1: SUBARRAY 0 Subarray, 0=>all
>>>>>>>>> AIPS 1: UVRANGE 0 0 Range of uv
>>>>>>>>> distance for full
>>>>>>>>> AIPS 1: weight
>>>>>>>>> AIPS 1: WTUV 0 Weight outside
>>>>>>>>> UVRANGE 0=0.
>>>>>>>>> AIPS 1: WEIGHTIT 0 Modify data weights
>>>>>>>>> function
>>>>>>>>> AIPS 1: Cal. info for input:
>>>>>>>>> AIPS 1: DOCALIB 0 > 0 calibrate data
>>>>>>>>> & weights
>>>>>>>>> AIPS 1: > 99 do NOT
>>>>>>>>> calibrate weights
>>>>>>>>> AIPS 1: GAINUSE 0 CL table to apply.
>>>>>>>>> AIPS 1: DOPOL -1 If >0 correct
>>>>>>>>> polarization.
>>>>>>>>> AIPS 1: BLVER -1 BL table to apply.
>>>>>>>>> AIPS 1: FLAGVER 0 Flag table version
>>>>>>>>> AIPS 1: DOBAND -1 If >0 apply
>>>>>>>>> bandpass cal.
>>>>>>>>> AIPS 1: Method used depends
>>>>>>>>> on value
>>>>>>>>> AIPS 1: of DOBAND (see HELP
>>>>>>>>> file).
>>>>>>>>> AIPS 1: BPVER -1 Bandpass table version
>>>>>>>>> AIPS 1: SMOOTH *all 0 Smoothing function.
>>>>>>>>> See
>>>>>>>>> AIPS 1: ** press RETURN for more, enter Q or next line to quit
>>>>>>>>> print **
>>>>>>>>> #
>>>>>>>>> AIPS 1: HELP SMOOTH for
>>>>>>>>> details.
>>>>>>>>> AIPS 1:
>>>>>>>>> AIPS 1: CLEAN map. See HELP.
>>>>>>>>> AIPS 1: IN2NAME '3C286_U' Cleaned map name
>>>>>>>>> (name)
>>>>>>>>> AIPS 1: IN2CLASS 'MODEL' Cleaned map name
>>>>>>>>> (class)
>>>>>>>>> AIPS 1: IN2SEQ 0 Cleaned map name
>>>>>>>>> (seq. #)
>>>>>>>>> AIPS 1: IN2DISK 1 Cleaned map disk
>>>>>>>>> unit #
>>>>>>>>> AIPS 1: INVERS 0 CC file version #.
>>>>>>>>> AIPS 1: NCOMP *all 0 # comps to use for
>>>>>>>>> model.
>>>>>>>>> AIPS 1: 1 value per field
>>>>>>>>> AIPS 1: FLUX 0 Lowest CC component
>>>>>>>>> used.
>>>>>>>>> AIPS 1: NMAPS 0 No. Clean map files
>>>>>>>>> AIPS 1: CMETHOD ' ' Modeling method:
>>>>>>>>> AIPS 1: 'DFT','GRID',' '
>>>>>>>>> AIPS 1: CMODEL ' ' Model type:
>>>>>>>>> 'COMP','IMAG'
>>>>>>>>> AIPS 1: SMODEL *all 0 Source model,
>>>>>>>>> 1=flux,2=x,3=y
>>>>>>>>> AIPS 1: See HELP SMODEL for
>>>>>>>>> models.
>>>>>>>>> AIPS 1:
>>>>>>>>> AIPS 1: Output uv data file.
>>>>>>>>> AIPS 1: OUTNAME ' ' UV file name (name)
>>>>>>>>> AIPS 1: OUTCLASS ' ' UV file name
>>>>>>>>> (class)
>>>>>>>>> AIPS 1: ** press RETURN for more, enter Q or next line to quit
>>>>>>>>> print **
>>>>>>>>> #
>>>>>>>>> AIPS 1: OUTSEQ 0 UV file name
>>>>>>>>> (seq. #)
>>>>>>>>> AIPS 1: OUTDISK 1 UV file disk
>>>>>>>>> drive #
>>>>>>>>> AIPS 1:
>>>>>>>>> AIPS 1: Solution control
>>>>>>>>> adverbs:
>>>>>>>>> AIPS 1: REFANT 22 Reference antenna
>>>>>>>>> AIPS 1: SOLINT 0 Solution interval
>>>>>>>>> (min)
>>>>>>>>> AIPS 1: SOLSUB 0 Solution subinterval
>>>>>>>>> AIPS 1: SOLMIN 0 Min solution interval
>>>>>>>>> AIPS 1: APARM 4 0 General parameters
>>>>>>>>> AIPS 1: 0 0 1=min. no. antennas
>>>>>>>>> AIPS 1: 0 2 2 > 0 => data
>>>>>>>>> divided
>>>>>>>>> AIPS 1: *rest 0 3 > 0 => avg. RR,LL
>>>>>>>>> AIPS 1: 5 > 0 => avg. IFs.
>>>>>>>>> AIPS 1: 6=print level,
>>>>>>>>> 1=good,
>>>>>>>>> AIPS 1: 2 closure, 3 SNR
>>>>>>>>> AIPS 1: 7=SNR cutoff (0=>5)
>>>>>>>>> AIPS 1: 8=max. ant. #
>>>>>>>>> (no AN)
>>>>>>>>> AIPS 1: 9 > 0 => pass
>>>>>>>>> failed soln
>>>>>>>>> AIPS 1: 10 < 99 cal
>>>>>>>>> output weights
>>>>>>>>> AIPS 1: Phase-amplitude
>>>>>>>>> Parameters:
>>>>>>>>> AIPS 1: DOFLAG 0 Flag on closure error?
>>>>>>>>> AIPS 1: ** press RETURN for more, enter Q or next line to quit
>>>>>>>>> print **
>>>>>>>>> #
>>>>>>>>> AIPS 1: SOLTYPE ' ' Soln type,'
>>>>>>>>> ','L1','GCON',
>>>>>>>>> AIPS 1: 'R', 'L1R', 'GCOR'
>>>>>>>>> AIPS 1: SOLMODE 'A&P' Soln. mode:
>>>>>>>>> 'A&P','P','P!A',
>>>>>>>>> AIPS 1: 'GCON',
>>>>>>>>> AIPS 1: SOLCON 0 Gain constraint
>>>>>>>>> factor.
>>>>>>>>> AIPS 1: MINAMPER 10 Amplitude closure
>>>>>>>>> error
>>>>>>>>> AIPS 1: regarded as
>>>>>>>>> excessive in %
>>>>>>>>> AIPS 1: MINPHSER 10 Phase closure error
>>>>>>>>> regarded
>>>>>>>>> AIPS 1: as excessive in
>>>>>>>>> degrees
>>>>>>>>> AIPS 1: CPARM 0 0 Phase-amp. parameters
>>>>>>>>> AIPS 1: 1 1 1 = Min el for gain
>>>>>>>>> AIPS 1: 1 *rest 0
>>>>>>>>> normalization (deg)
>>>>>>>>> AIPS 1: 2 >0 =>
>>>>>>>>> normalize gain
>>>>>>>>> AIPS 1: 3 avg. amp.
>>>>>>>>> closure err
>>>>>>>>> AIPS 1: 4 avg. ph.
>>>>>>>>> closure err
>>>>>>>>> AIPS 1: 5 >0 => scalar
>>>>>>>>> average
>>>>>>>>> AIPS 1: 6 limit clipping
>>>>>>>>> in robust
>>>>>>>>> AIPS 1: 7 limit display
>>>>>>>>> of closure
>>>>>>>>> AIPS 1: errors
>>>>>>>>> AIPS 1: SNVER 0 Output SN table,
>>>>>>>>> 0=>new table
>>>>>>>>> AIPS 1: ANTWT *all 0 Ant. weights (0=>1.0)
>>>>>>>>> AIPS 1: ** press RETURN for more, enter Q or next line to quit
>>>>>>>>> print **
>>>>>>>>> #
>>>>>>>>> AIPS 1: GAINERR *all 0 Std. Dev. of
>>>>>>>>> antenna gains.
>>>>>>>>> AIPS 1: BADDISK *all 0 Disk no. not to use
>>>>>>>>> for
>>>>>>>>> AIPS 1: scratch files.
>>>>>>>>> >
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 5/16/08 4:42 PM, Amy Mioduszewski wrote:
>>>>>>>>>> Sorry. Send me your CALIB inputs.
>>>>>>>>>>
>>>>>>>>>> Amy
>>>>>>>>>>
>>>>>>>>>> Jeff Mangum wrote:
>>>>>>>>>>> That is what I mean. The models that CALRD finds. It finds
>>>>>>>>>>> the 3C286 model just fine. When I tries to use it, though,
>>>>>>>>>>> CALIB fails.
>>>>>>>>>>>
>>>>>>>>>>> -- Jeff
>>>>>>>>>>>
>>>>>>>>>>> On 5/16/08 4:34 PM, Amy Mioduszewski wrote:
>>>>>>>>>>>> Hi Jeff,
>>>>>>>>>>>>
>>>>>>>>>>>> What do you mean by "built in models"? If you want to use
>>>>>>>>>>>> the flux calibrator models you have to load them with
>>>>>>>>>>>> CALRD. VLACALIB will load and use models automatically.
>>>>>>>>>>>>
>>>>>>>>>>>> Amy
>>>>>>>>>>>>
>>>>>>>>>>>> Jeff Mangum wrote:
>>>>>>>>>>>>> Hello,
>>>>>>>>>>>>>
>>>>>>>>>>>>> I have U-band-only VLA observations taken this February
>>>>>>>>>>>>> that I am trying to calibrate. When I try to use CALIB
>>>>>>>>>>>>> with one of the built-in models for 3C286, the task simply
>>>>>>>>>>>>> dies without indicating what the problem might be.
>>>>>>>>>>>>>
>>>>>>>>>>>>> localh> CALIB1: CALIB USING 20080223 . CH 0 . 1
>>>>>>>>>>>>> DISK= 1 USID= 277
>>>>>>>>>>>>> localh> CALIB1: Doing no flagging this time
>>>>>>>>>>>>> localh> CALIB1: Purports to die of UNNATURAL causes
>>>>>>>>>>>>>
>>>>>>>>>>>>> I have tried modifying several input parameters, but
>>>>>>>>>>>>> cannot get past this point. I wonder if the fact that my
>>>>>>>>>>>>> data only has 14 antennas (only those with U-band
>>>>>>>>>>>>> receivers) is causing problems?
>>>>>>>>>>>>>
>>>>>>>>>>>>> -- Jeff
>>>>>>>>>>>>>
>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>> Daip mailing list
>>>>>>>>>>>>> Daip at listmgr.cv.nrao.edu
>>>>>>>>>>>>> http://listmgr.cv.nrao.edu/mailman/listinfo/daip
>>>>>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Daip mailing list
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>>>>>>>>>
>>>>>>>
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>>>>>>> Daip mailing list
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>>>>
>>
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