[daip] Flux calibrator model problems with U-band VLA-only observations?
Amy Mioduszewski
amiodusz at nrao.edu
Thu Jun 26 19:11:25 EDT 2008
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
>>>>>>>> Daip at listmgr.cv.nrao.edu
>>>>>>>> http://listmgr.cv.nrao.edu/mailman/listinfo/daip
>>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Daip mailing list
>>>>>> Daip at listmgr.cv.nrao.edu
>>>>>> http://listmgr.cv.nrao.edu/mailman/listinfo/daip
>>>>>>
>>>
>
More information about the Daip
mailing list