[daip] Flux calibrator model problems with U-band VLA-only observations?
Amy Mioduszewski
amiodusz at nrao.edu
Mon May 19 12:06:38 EDT 2008
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?
Thanks!
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
>>>>>
>
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