[daip] Trouble with APCAL

[Matthew Schenker]

Hi,

I'm trying to run some calibrations on a VLBA data set and having some 
trouble with the APCAL task and was wondering if you could provide any 
insight.  When I run it, the task gives the error message:

kronos> APCAL1: Task APCAL  (release of 31DEC08) begins
kronos> APCAL1: REAWX: ERROR  6 SOMETHING WRONG WITH WX TABLE
kronos> APCAL1: REAWX: WXINI FINDS     0 ROWS, WX TABLE CORRUPT?
kronos> APCAL1: TXTWX: ERR  6 OPENING WX TABLE   1
kronos> APCAL1: Purports to die of UNNATURAL causes
kronos> APCAL1: kronos       31DEC08 TST: Cpu=       0.0  Real=       0

I checked the WX table using prtab and nothing seems to be out of the 
ordinary.  I've attached the input parameters I've been using for APCAL 
at the bottom.  Any advice that you could give on this matter would be 
much appreciated.

Cheers,
Matt Schenker


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AIPS 1: APCAL     Task to generate an amplitude calibration SN table
AIPS 1: Adverbs     Values                 Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME     'GEODETIC-1'            Input UV file name (name)
AIPS 1: INCLASS    'VBGLU'                 Input UV file name (class)
AIPS 1: INSEQ         1                    Input UV file name (seq. #)
AIPS 1: INDISK        4                    Input UV file disk unit #
AIPS 1:
AIPS 1: ANTENNAS      3        *rest 0     Antennas to calibrate
AIPS 1: SUBARRAY      0                    Subarray 0 -> 1
AIPS 1: STOKES     ' '                     Stokes type ('R','L',' ')
AIPS 1: BIF           1                    Start IF number
AIPS 1: EIF           1                    End IF number
AIPS 1: FREQID        1                    Freq. ID to calibrate
AIPS 1: SOURCES    *all ' '                Sources to calibrate
AIPS 1: TIMERANG      1           0        Time range to calibrate
AIPS 1:               0           0           2        *rest 0
AIPS 1: TYVER         0                    TY table version number.
AIPS 1: GCVER         0                    GC table version number.
AIPS 1: SNVER         0                    Output SN table version.
AIPS 1:                                      0 -> highest unique
AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
#
AIPS 1: OPCODE     'GRID'                  Opacity correction opcode:
AIPS 1:                                    '    ' -> no opacity corr.
AIPS 1:                                    'GRID','GRDR','OPAC','OPCR',
AIPS 1:                                      'LESQ' -> fit for opacity
AIPS 1: APARM      *all 0                  Calibration parameters:
AIPS 1:                                    (1) -> B factor (def. 1.0)
AIPS 1:                                    Opacity parameters:
AIPS 1:                                    (2) -> ZA limit (deg)
AIPS 1:                                    (3) >=0  use spillover
AIPS 1:                                             correction
AIPS 1:                                    (4) > 0  use all FQ in
AIPS 1:                                             opac. soln.
AIPS 1:                                    (5) Limit to sec(z) plotted
AIPS 1: SOLINT        0                    Solution interval (min)
AIPS 1:                                       0 -> use all data
AIPS 1: INVERS        1                    WX table version number.
AIPS 1:                                       0 -> use text file
AIPS 1: INFILE     *all ' '                Text file with weather info.
AIPS 1:                                       Must be ' ' if using WX
AIPS 1:                                       table (INVERS).
AIPS 1: TRECVR     *all 0                    Receiver temperatures (K);
AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
#
AIPS 1:                                       in (R,L) pairs.
AIPS 1: TAU0       *all 0                  Zenith opacities (per ant.)
AIPS 1: DOFIT         1           1        Fit type (per ant.)
AIPS 1:               1           1          -1 -> no opacity correction
AIPS 1:               1           1           0 -> apply TRECVR only
AIPS 1:               1           1           1 -> solve for Trec using
AIPS 1:               1           1                fitting method spec.
AIPS 1:               1           1                in OPCODE; then apply
AIPS 1:               1           1           1           1
AIPS 1:               1           1           1           1
AIPS 1:               1           1           1           1
AIPS 1:               1           1           1           1
AIPS 1:               1           1
AIPS 1: PRTLEV        0                    Print level
AIPS 1: DOTV          1                    TV selection (<0 -> PL file)
AIPS 1: LTYPE         3                    Plot labeling
AIPS 1: GRCHAN        0                    TV Graphics channel to use