[daip] calib question
Eric Greisen
egreisen at nrao.edu
Mon Oct 8 19:35:44 EDT 2012
bob at physics.ucdavis.edu wrote:
> hi, so i have combined the c and b config data with reway run.
> when i try to selfcal, the P only works fine but when i try to
> selfcal both p and A it always fails.
>
> CALIB6: Field 123 used 0 CCs
> CALIB6: Determining solutions using full vector averaging
> CALIB6: Writing SN table 2
> CALIB6: RPOL, IF= 1 The average gain over these antennas is 1.000E+00
> CALIB6: RPOL, IF= 2 The average gain over these antennas is 1.000E+00
> CALIB6: RPOL, IF= 3 The average gain over these antennas is 1.000E+00
> CALIB6: RPOL, IF= 4 The average gain over these antennas is 1.000E+00
> CALIB6: LPOL, IF= 1 The average gain over these antennas is 1.000E+00
> CALIB6: LPOL, IF= 2 The average gain over these antennas is 1.000E+00
> CALIB6: LPOL, IF= 3 The average gain over these antennas is 1.000E+00
> CALIB6: LPOL, IF= 4 The average gain over these antennas is 1.000E+00
> CALIB6: ERROR: NO VALID SOLUTIONS FOUND
> CALIB6: Destroyed UV image file: catno= 6 disk= 2
> CALIB6: Purports to die of UNNATURAL causes
> CALIB6: first 31DEC11 TST: Cpu= 2137.1 Real= 2451 IO= 27826
>
> the inputs for calib are as follows. do you see any obvious mistakes?
>
> AIPS 6: INNAME 'M33L3BC' UV file name (name)
> AIPS 6: INCLASS 'CALIB' UV file name (class)
> AIPS 6: INSEQ 3 UV file name (seq. #)
> AIPS 6: INDISK 2 UV file disk drive #
> AIPS 6: Data selection (multisource):
> AIPS 6: CALSOUR *all ' ' Calibrator sources
> AIPS 6: QUAL -1 Calibrator qualifier -1=>all
> AIPS 6: CALCODE ' ' Calibrator code ' '=>all
> AIPS 6: SELBAND -1 Bandwidth to select (kHz)
> AIPS 6: SELFREQ -1 Frequency to select (MHz)
> AIPS 6: FREQID -1 Freq. ID to select.
> AIPS 6: TIMERANG *all 0 Time range to use.
> AIPS 6: ICHANSEL *all 0 Array of start and stop chn
> AIPS 6: numbers, plus a channel
> AIPS 6: increment and IF to be used
> AIPS 6: for channel selection in the
> AIPS 6: averaging. See HELP ICHANSEL.
> AIPS 6: Default = center 75% of band.
> AIPS 6: ANTENNAS *all 0 Antennas to select. 0=all
> AIPS 6: DOFIT *all 0 Subset of ANTENNAS list for
> AIPS 6: which solns are desired.
> AIPS 6: ANTUSE *all 0 Mean gain is calculated
> AIPS 6: (CPARM(2)>0) using only the
> AIPS 6: listed antennas. See explain.
> AIPS 6: SUBARRAY 0 Subarray, 0=>all
> AIPS 6: UVRANGE 2 200 Range of uv distance for full
> AIPS 6: weight
> AIPS 6: WTUV 0 Weight outside UVRANGE 0=0.
> AIPS 6: WEIGHTIT 0 Modify data weights function
> AIPS 6: Cal. info for input:
> AIPS 6: DOCALIB -1 > 0 calibrate data & weights
> AIPS 6: > 99 do NOT calibrate weights
> AIPS 6: NOT for single-source files
> AIPS 6: GAINUSE 0 CL table to apply.
> AIPS 6: DOPOL -1 If >0 correct polarization.
> AIPS 6: PDVER 0 PD table to apply (DOPOL>0)
> AIPS 6: BLVER -1 BL table to apply.
> AIPS 6: FLAGVER -1 Flag table version
> AIPS 6: DOBAND -1 If >0 apply bandpass cal.
> AIPS 6: Method used depends on value
> AIPS 6: of DOBAND (see HELP file).
> AIPS 6: BPVER -1 Bandpass table version
> AIPS 6: SMOOTH *all 0 Smoothing function. See
>
> AIPS 6: IN2NAME 'M33L3BC' Cleaned map name (name)
> AIPS 6: IN2CLASS 'ICL001' Cleaned map name (class)
> AIPS 6: IN2SEQ 2 Cleaned map name (seq. #)
> AIPS 6: IN2DISK 6 Cleaned map disk unit #
> AIPS 6: INVERS 0 CC file version #.
> AIPS 6: NCOMP *all 0 # comps to use for model.
> AIPS 6: 1 value per field
> AIPS 6: FLUX 0 Lowest CC component used.
> AIPS 6: NMAPS 123 No. Clean map files
> AIPS 6: CMETHOD ' ' Modeling method:
> AIPS 6: 'DFT','GRID',' '
> AIPS 6: CMODEL 'COMP' Model type: 'COMP','IMAG'
> AIPS 6: 'SUBI' (see HELP re images)
> AIPS 6: SMODEL *all 0 Source model, 1=flux,2=x,3=y
> AIPS 6: See HELP SMODEL for models.
> AIPS 6: Output uv data file.
> AIPS 6: OUTNAME ' ' UV file name (name)
> AIPS 6: OUTCLASS ' ' UV file name (class)
> AIPS 6: OUTSEQ 0 UV file name (seq. #)
> AIPS 6: OUTDISK 2 UV file disk drive #
> AIPS 6: DOAPPLY 0 >= 0 write output if
> AIPS 6: single source
> AIPS 6: Solution control adverbs:
> AIPS 6: REFANT 8 Reference antenna
> AIPS 6: SOLINT 15 Solution interval (min)
> AIPS 6: SOLSUB 0 Solution subinterval
> AIPS 6: SOLMIN 0 Min solution interval
> AIPS 6: APARM *all 0 General parameters
> AIPS 6: 1=min. no. antennas
> AIPS 6: 2 > 0 => data divided
> AIPS 6: 3 > 0 => avg. RR,LL
> AIPS 6: 5 > 0 => avg. IFs.
> AIPS 6: 6=print level, 1=good,
> AIPS 6: 2 closure, 3 SNR
> AIPS 6: 7=SNR cutoff (0=>5)
> AIPS 6: 8=max. ant. # (no AN)
> AIPS 6: 9 > 0 => pass failed soln
> AIPS 6: 10 < 99 cal output weights
> AIPS 6: Phase-amplitude Parameters:
> AIPS 6: DOFLAG 0 Flag on closure error?
> AIPS 6: SOLTYPE 'GCOR' Soln type,' ','L1','GCON',
> AIPS 6: 'R', 'L1R', 'GCOR'
> AIPS 6: SOLMODE 'GCON' Soln. mode: 'A&P','P','P!A',
> AIPS 6: 'GCON',
> AIPS 6: SOLCON 0 Gain constraint factor.
> AIPS 6: MINAMPER 0 Amplitude closure error
> AIPS 6: regarded as excessive in %
> AIPS 6: MINPHSER 0 Phase closure error regarded
> AIPS 6: as excessive in degrees
> AIPS 6: NORMALIZ 0 >0 => normalize gain:
> AIPS 6: 1 globally, 2 by subarray,
> AIPS 6: 3 by subarray,IF
> AIPS 6: 4 by subarray,IF,pol
> AIPS 6: CPARM *all 0 Phase-amp. parameters
> AIPS 6: 1 = Min el for gain
> AIPS 6: normalization (deg)
> AIPS 6: 2 > 0 normalize w median
> AIPS 6: else use mean
> AIPS 6: 3 avg. amp. closure err
> AIPS 6: 4 avg. ph. closure err
> AIPS 6: 5 = 1 vector average
> AIPS 6: channels, scalar avg
> AIPS 6: between times
> AIPS 6: >= 2 scalar average
> AIPS 6: 6 limit clipping in robust
> AIPS 6: 7 limit display of closure
> AIPS 6: errors
> AIPS 6: SNVER 0 Output SN table, 0=>new table
> AIPS 6: ANTWT *all 0 Ant. weights (0=>1.0)
> AIPS 6: GAINERR *all 0 Std. Dev. of antenna gains.
> AIPS 6: BADDISK *all 0 Disk no. not to use for
>
I could have used more messages about components used etc but I am
looking at the GCOR and GCON adverbs here with which I am not familiar
but I believe they require additional information elsewhere which I do
not see in your adverbs. Try with 'L1' and 'P' to start...
Eric Greisen
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