[daip] CALIB broken?

Andy Biggs abiggs at eso.org
Fri Feb 22 16:12:28 EST 2013


Hi Eric. Here are those various things you asked for.

Andy

AIPS 2: Image=MULTI     (UV)         Filename=MULTI       .VBGLU .   3
AIPS 2: Telescope=GMRT               Receiver=GMRT
AIPS 2: Observer=ANDY BIG            User #= 4000
AIPS 2: Observ. date=26-JAN-2008     Map date=15-NOV-2011
AIPS 2: # visibilities   4391274     Sort order  TB
AIPS 2: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 2:            SOURCE
AIPS 2: ----------------------------------------------------------------
AIPS 2: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 2: COMPLEX      3   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 2: FREQ       128   5.9406250E+08       1.00  1.2500000E+05    0.00
AIPS 2: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: RA           1    00 00 00.000       1.00       3600.000    0.00
AIPS 2: DEC          1    00 00 00.000       1.00       3600.000    0.00
AIPS 2: ----------------------------------------------------------------
AIPS 2: Coordinate equinox 2000.00
AIPS 2: Maximum version number of extension files of type FQ is   1
AIPS 2: Maximum version number of extension files of type NX is   1
AIPS 2: Maximum version number of extension files of type HI is   1
AIPS 2: Maximum version number of extension files of type CL is   3
AIPS 2: Maximum version number of extension files of type SU is   1
AIPS 2: Maximum version number of extension files of type AN is   1
AIPS 2: Maximum version number of extension files of type FG is   5
AIPS 2: Maximum version number of extension files of type SN is   3
AIPS 2: Maximum version number of extension files of type BP is   1
AIPS 2: Maximum version number of extension files of type PL is   7

AIPS 2: CALIB:  Task to determine calibration for data.
AIPS 2: Adverbs     Values                 Comments
AIPS 2: ----------------------------------------------------------------
AIPS 2:                                    Input uv data.
AIPS 2: INNAME     'MULTI'                    UV file name (name)
AIPS 2: INCLASS    'VBGLU'                    UV file name (class)
AIPS 2: INSEQ         3                       UV file name (seq. #)
AIPS 2: INDISK        2                       UV file disk drive #
AIPS 2:                                    Data selection (multisource):
AIPS 2: CALSOUR    '3C147'                 Calibrator sources
AIPS 2:            '1400+621'  *rest ' '
AIPS 2: QUAL         -1                    Calibrator qualifier -1=>all
AIPS 2: CALCODE    ' '                     Calibrator code '    '=>all
AIPS 2: SELBAND      -1                    Bandwidth to select (kHz)
AIPS 2: SELFREQ      -1                    Frequency to select (MHz)
AIPS 2: FREQID       -1                    Freq. ID to select.
AIPS 2: TIMERANG   *all 0                  Time range to use.
AIPS 2: ICHANSEL     75          75        Array of start and stop chn
AIPS 2:               1        *rest 0     numbers, plus a channel
AIPS 2:                                    increment and IF to be used
AIPS 2:                                    for channel selection in the
AIPS 2:                                    averaging. See HELP ICHANSEL.
AIPS 2:                                    Default = center 75% of band.
AIPS 2: ANTENNAS   *all 0                  Antennas to select. 0=all
AIPS 2: DOFIT      *all 0                  Subset of ANTENNAS list for
AIPS 2:                                    which solns are desired.
AIPS 2: ANTUSE     *all 0                  Mean gain is calculated
AIPS 2:                                    (CPARM(2)>0) using only the
AIPS 2:                                    listed antennas. See explain.
AIPS 2: SUBARRAY      0                    Subarray, 0=>all
AIPS 2: UVRANGE       2         300        Range of uv distance for full
AIPS 2:                                    weight
AIPS 2: WTUV          0                    Weight outside UVRANGE 0=0.
AIPS 2: WEIGHTIT      3                    Modify data weights function
AIPS 2:                                    Cal. info for input:
AIPS 2: DOCALIB       1                    > 0 calibrate data & weights
AIPS 2:                                    > 99 do NOT calibrate weights
AIPS 2:                                    NOT for single-source files
AIPS 2: GAINUSE       2                    CL table to apply.
AIPS 2: DOPOL        -1                    If >0 correct polarization.
AIPS 2: PDVER         0                    PD table to apply (DOPOL>0)
AIPS 2: BLVER        -1                    BL table to apply.
AIPS 2: FLAGVER       0                    Flag table version
AIPS 2: DOBAND       -1                    If >0 apply bandpass cal.
AIPS 2:                                    Method used depends on value
AIPS 2:                                    of DOBAND (see HELP file).
AIPS 2: BPVER        -1                    Bandpass table version
AIPS 2: SMOOTH     *all 0                  Smoothing function. See
AIPS 2:                                    HELP SMOOTH for details.
AIPS 2:
AIPS 2:                                    CLEAN map. See HELP.
AIPS 2: IN2NAME    ' '                        Cleaned map name (name)
AIPS 2: IN2CLASS   ' '                        Cleaned map name (class)
AIPS 2: IN2SEQ        0                       Cleaned map name (seq. #)
AIPS 2: IN2DISK       0                       Cleaned map disk unit #
AIPS 2: INVERS        0                    CC file version #.
AIPS 2: NCOMP      *all 0                  # comps to use for model.
AIPS 2:                                    1 value per field
AIPS 2: FLUX          0                    Lowest CC component used.
AIPS 2: NMAPS         0                    No. Clean map files
AIPS 2: CMETHOD    ' '                     Modeling method:
AIPS 2:                                    'DFT','GRID','    '
AIPS 2: CMODEL     ' '                     Model type: 'COMP','IMAG'
AIPS 2:                                    'SUBI' (see HELP re images)
AIPS 2: SMODEL     *all 0                  Source model, 1=flux,2=x,3=y
AIPS 2:                                    See HELP SMODEL for models.
AIPS 2:                                    Output uv data file.
AIPS 2: OUTNAME    ' '                        UV file name (name)
AIPS 2: OUTCLASS   ' '                        UV file name (class)
AIPS 2: OUTSEQ        0                       UV file name (seq. #)
AIPS 2: OUTDISK       1                       UV file disk drive #
AIPS 2: DOAPPLY       0                       >= 0 write output if
AIPS 2:                                            single source
AIPS 2:                                    Solution control adverbs:
AIPS 2: REFANT        4                    Reference antenna
AIPS 2: SOLINT        0.5                  Solution interval (min)
AIPS 2: SOLSUB        0                    Solution subinterval
AIPS 2: SOLMIN        0                    Min solution interval
AIPS 2: APARM      *all 0                  General parameters
AIPS 2:                                       1=min. no. antennas
AIPS 2:                                       2 > 0 => data divided
AIPS 2:                                       3 > 0 => avg. RR,LL
AIPS 2:                                       5 > 0 => avg. IFs.
AIPS 2:                                       6=print level, 1=good,
AIPS 2:                                         2 closure, 3 SNR
AIPS 2:                                       7=SNR cutoff (0=>5)
AIPS 2:                                       8=max. ant. # (no AN)
AIPS 2:                                       9 > 0 => pass failed soln
AIPS 2:                                      10 < 99 cal output weights
AIPS 2:                                    Phase-amplitude Parameters:
AIPS 2: DOFLAG        0                    Flag on closure error?
AIPS 2: SOLTYPE    'L1R'                   Soln type,'  ','L1','GCON',
AIPS 2:                                       'R', 'L1R', 'GCOR'
AIPS 2: SOLMODE    'A&P'                   Soln. mode: 'A&P','P','P!A',
AIPS 2:                                    'GCON',
AIPS 2: SOLCON        0                    Gain constraint factor.
AIPS 2: MINAMPER      0                    Amplitude closure error
AIPS 2:                                    regarded as excessive in %
AIPS 2: MINPHSER      0                    Phase closure error regarded
AIPS 2:                                    as excessive in degrees
AIPS 2: NORMALIZ      0                    >0 => normalize gain:
AIPS 2:                                      1 globally, 2 by subarray,
AIPS 2:                                      3 by subarray,IF
AIPS 2:                                      4 by subarray,IF,pol
AIPS 2: CPARM      *all 0                  Phase-amp. parameters
AIPS 2:                                       1 = Min el for gain
AIPS 2:                                            normalization (deg)
AIPS 2:                                       2 > 0 normalize w median
AIPS 2:                                            else use mean
AIPS 2:                                       3 avg. amp. closure err
AIPS 2:                                       4 avg. ph. closure err
AIPS 2:                                       5  = 1 vector average
AIPS 2:                                         channels, scalar avg
AIPS 2:                                         between times
AIPS 2:                                         >= 2 scalar average
AIPS 2:                                       6 limit clipping in robust
AIPS 2:                                       7 limit display of closure
AIPS 2:                                         errors
AIPS 2: SNVER         3                    Output SN table, 0=>new table
AIPS 2: ANTWT      *all 0                  Ant. weights (0=>1.0)
AIPS 2: GAINERR    *all 0                  Std. Dev. of antenna gains.
AIPS 2: BADDISK    *all 0                  Disk no. not to use for
AIPS 2:                                       scratch files.

CALIB2: Task CALIB  (release of 31DEC13) begins
CALIB2: Using MULTI . VBGLU . 3  Disk= 2 Usid= 4000
CALIB2: L1 Solution type
CALIB2: UVGET: Using flag table version   5 to edit data
CALIB2: Selecting, editing and calibrating the data
AIPS 2: Resumes
CALIB2: This is not self-calibration
CALIB2: Dividing data by source flux densities
CALIB2: Determining solutions using full vector averaging
CALIB2: Writing SN table    3
CALIB2: RPOL, IF= 1 The average gain over these antennas is  1.102E+00
CALIB2: RPOL, IF= 2 The average gain over these antennas is  1.014E+00
CALIB2: LPOL, IF= 1 The average gain over these antennas is  9.611E-01
CALIB2: LPOL, IF= 2 The average gain over these antennas is  9.061E-01
CALIB2: Found        21044 good solutions
CALIB2:               1708 solutions had no data
CALIB2: Average closure rms =  0.05253 +-  0.02232
CALIB2: Fraction of times having data >  2.5 rms from solution
CALIB2: 0.40603 of the times had  0 -  2 percent outside  2.5 times rms
CALIB2: 0.19196 of the times had  2 -  4 percent outside  2.5 times rms
CALIB2: 0.01910 of the times had  4 -  6 percent outside  2.5 times rms
CALIB2: 0.03819 of the times had  6 -  8 percent outside  2.5 times rms
CALIB2: 0.04623 of the times had  8 - 10 percent outside  2.5 times rms
CALIB2: 0.05729 of the times had 10 - 12 percent outside  2.5 times rms
CALIB2: 0.04623 of the times had 12 - 14 percent outside  2.5 times rms
CALIB2: 0.00402 of the times had 14 - 16 percent outside  2.5 times rms
CALIB2: Appears to have ended successfully
CALIB2: pc016987 31DEC13 TST: Cpu=     17.3  Real=    153  IO=      4845

LISTR2: Task LISTR  (release of 31DEC13) begins
  pc016987  LISTR(31DEC13)   4000     22-FEB-2013  22:07:32    Page    1
File = MULTI       .VBGLU .   3 Vol = 2  Userid = 4000
Freq =  0.594062500 GHz   Ncor =  2   No. vis =   4391274
Scan summary listing

Scan      Source      Qual  Calcode Sub         Timerange          FrqID 
   START VIS  END VIS
    1 3C147           : 0000           1  0/18:43:37 -   0/19:11:27 
1       1     173565
    2 1400+621        : 0000           1  0/19:16:41 -   0/19:21:35 
1  173566     204450
    3 GROTHN3         : 0000           1  0/19:22:38 -   0/19:53:53 
1  204451     399330
    4 1400+621        : 0000           1  0/19:54:47 -   0/19:59:41 
1  399331     430215
    5 GROTHN3         : 0000           1  0/20:00:31 -   0/20:31:46 
1  430216     625095
    6 1400+621        : 0000           1  0/20:32:53 -   0/20:37:47 
1  625096     655980
    7 GROTHN3         : 0000           1  0/20:38:41 -   0/21:10:09 
1  655981     852165
    8 1400+621        : 0000           1  0/21:11:07 -   0/21:16:01 
1  852166     883050
    9 GROTHN3         : 0000           1  0/21:17:00 -   0/21:48:19 
1  883051    1078365
   10 1400+621        : 0000           1  0/21:49:22 -   0/21:54:15 
1 1078366    1109250
   11 GROTHN3         : 0000           1  0/21:55:10 -   0/22:26:37 
1 1109251    1305435
   12 1400+621        : 0000           1  0/22:27:49 -   0/22:32:42 
1 1305436    1336320
   13 GROTHN3         : 0000           1  0/22:33:41 -   0/23:04:47 
1 1336321    1525806
   14 1400+621        : 0000           1  0/23:05:54 -   0/23:10:48 
1 1525807    1556691
   15 GROTHN3         : 0000           1  0/23:11:43 -   0/23:43:06 
1 1556692    1752441
   16 1400+621        : 0000           1  0/23:44:00 -   0/23:48:54 
1 1752442    1783326
   17 GROTHN3         : 0000           1  0/23:50:05 -   1/00:21:33 
1 1783327    1982556
   18 1400+621        : 0000           1  1/00:22:31 -   1/00:27:25 
1 1982557    2013876
   19 GROTHN3         : 0000           1  1/00:28:28 -   1/00:59:55 
1 2013877    2216151
   20 1400+621        : 0000           1  1/01:00:54 -   1/01:05:48 
1 2216152    2247906
   21 GROTHN3         : 0000           1  1/01:06:51 -   1/01:38:01 
1 2247907    2444961
   22 1400+621        : 0000           1  1/01:39:17 -   1/01:44:10 
1 2444962    2475846
   23 GROTHN3         : 0000           1  1/01:45:09 -   1/02:16:36 
1 2475847    2675076
   24 1400+621        : 0000           1  1/02:17:39 -   1/02:22:37 
1 2675077    2706396
   25 GROTHN3         : 0000           1  1/02:23:36 -   1/02:55:03 
1 2706397    2904756
   26 1400+621        : 0000           1  1/02:56:15 -   1/03:01:08 
1 2904757    2936511
   27 GROTHN3         : 0000           1  1/03:02:03 -   1/03:33:22 
1 2936512    3133131
   28 1400+621        : 0000           1  1/03:34:25 -   1/03:39:18 
1 3133132    3164016
   29 GROTHN3         : 0000           1  1/03:40:21 -   1/04:11:45 
1 3164017    3359012
   30 1400+621        : 0000           1  1/04:12:43 -   1/04:17:37 
1 3359013    3389462
   31 GROTHN3         : 0000           1  1/04:18:44 -   1/04:50:03 
1 3389463    3574962
   32 1400+621        : 0000           1  1/04:51:06 -   1/04:55:59 
1 3574963    3602556
   33 GROTHN3         : 0000           1  1/04:56:54 -   1/05:28:17 
1 3602557    3788098
   34 1400+621        : 0000           1  1/05:29:29 -   1/05:34:22 
1 3788099    3817736
   35 GROTHN3         : 0000           1  1/05:35:25 -   1/06:06:48 
1 3817737    4021548
   36 1400+621        : 0000           1  1/06:07:51 -   1/06:12:45 
1 4021549    4056058
   37 GROTHN3         : 0000           1  1/06:13:35 -   1/06:23:39 
1 4056059    4118848
   38 1400+621        : 0000           1  1/06:24:55 -   1/06:32:49 
1 4118849    4174470
   39 3C48            : 0000           1  1/06:54:16 -   1/07:30:50 
1 4174471    4391274
Type Q to stop, just hit RETURN to continue 


  pc016987  LISTR(31DEC13)   4000     22-FEB-2013  22:07:34    Page    2
File = MULTI       .VBGLU .   3 Vol = 2  Userid = 4000

Source summary
Velocity type = 'TOPOCENT'    Definition = 'RADIO   '

   ID Source           Qual  Calcode RA(2000.0)     Dec(2000.0)   IFlux 
   QFlux   UFlux   VFlux  No. vis
    1 3C147           : 0000         05:42:36.1330  49:51:07.165  36.714 
   0.000   0.000   0.000  173565
              IF( 2)                                              36.254 
   0.000   0.000   0.000
    2 1400+621        : 0000         14:00:28.6536  62:10:38.465   6.302 
   0.000   0.000   0.000  612814
              IF( 2)                                               6.396 
   0.000   0.000   0.000
    3 GROTHN3         : 0000         14:22:24.7041  53:18:10.967   0.000 
   0.000   0.000   0.000 3388091
              IF( 2)                                               0.000 
   0.000   0.000   0.000
    4 3C48            : 0000         01:37:41.2777  33:09:35.683  29.414 
   0.000   0.000   0.000  216804
              IF( 2)                                              28.932 
   0.000   0.000   0.000

   ID Source            Freq(GHz) Velocity(Km/s) Rest freq (GHz)
    1 All Sources          0.5941         0.0000          0.0000
      IF(  2)              0.6101         0.0000          0.0000

Frequency Table summary
FQID IF#      Freq(GHz)      BW(kHz)   Ch.Sep(kHz)  Sideband  Bandcode
    1   1       0.59406250   16000.0010    125.0000      1
        2       0.61006250   16000.0010    125.0000      1
LISTR2: Appears to have ended successfully
LISTR2: pc016987     31DEC13 TST: Cpu=       0.0  Real=       2
AIPS 2: Resumes

On 22/02/2013 21:34, Eric Greisen wrote:
> Andrew Biggs wrote:
>> Hi Eric. The colours are different IFs/polarizations and the station IDs
>> are C for "central" (a square km full of antennas) and E means "East"
>> i.e.
>> for the East arm with numbers increasing according to how far away they
>> are from the centre. S therefore refers to the South arm.
>>
>> Anyway, I've tracked down the source of the problem. The clue is that, in
>> the plot I sent you, the first source looks fine. If I therefore run the
>> 31DEC13 CALIB with just the second source (I usually run it with both
>> simultaneously), the resulting solutions look absolutely fine. Does this
>> ring any bells?
>
> Given that I cannot find any difference between 31DEC13 and 31DEC12
> CALIB in either CALIB.FOR or any relevant subroutines, it is hard to
> come up with a clue. Is your 31DEC12 up to date or when was the last
> time you ran a MNJ on it? Can I see your inputs to CALIB when you try to
> do the 2 sources at once (and it fails)? Also an IMHEADER of the input
> file and perhaps a SCAN output of LISTR? It is as if some model is being
> applied to both sources but with a position error in the 2nd when you do
> both at once - perhaps the CALIB messages as well might indicate this.
>
> Thanks
>
> Eric

-- 

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