[daip] Flux calibrator model problems with U-band VLA-only observations?
Jeff Mangum
jmangum at nrao.edu
Mon May 19 15:39:42 EDT 2008
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
>>>>>>
>>
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