[daip] FITLD issue

[Matt Lister]

Hi Eric et al.,

I'm trying to load this u,v FITS file with FITLD into AIPS

http://www.physics.purdue.edu/~mlister/1548+056.u.1995_12_15.uvf

and I'm getting this error with 31DEC17 (also with old AIPS versions)

ITLD2: PARSCD: NUMBER ERROR ON RESTFREQ
FITLD2: ERROR      1 RETURNED FROM UVFHDR
FITLD2: Purports to die of UNNATURAL causes

I don't believe the issue is with the parameter inputs to the task, as
other very similar uv FITS files load just fine. The file above also 
loads into DIFMAP with no problems. This particular file was written by 
AIPS with FITTP in 2007.

Any insight you may have would be appreciated,

Thanks,

Matt

AIPS 2: FITLD:  Task to store an image or UV data from a FITS tape
AIPS 2: Adverbs     Values                 Comments
AIPS 2: ----------------------------------------------------------------
AIPS 2: INTAPE        0                    Input tape drive # (0 => 1)
AIPS 2: NFILES        0                    # of files to advance on tape
AIPS 2: DATAIN     'U:1548+056/1995_12_15/ Disk file name
AIPS 2:            1548+056.u.1995_12_15.u
AIPS 2:            vf'
AIPS 2: OUTNAME    '1548+056'              File name (name)
AIPS 2: OUTCLASS   '951215'                File name (class)
AIPS 2: OUTSEQ        1                    File name (seq. #)
AIPS 2:                                       0 => highest unique number
AIPS 2:                                         => matching (on VLBA)
AIPS 2:                                      -1 => FITS tape value
AIPS 2: OUTDISK       1                    Disk drive # (0 => any)
AIPS 2: OPTYPE     ' '                     Type of data to load,
AIPS 2:                                    '  ' => all types
AIPS 2:                                    'UV' => UV data
AIPS 2:                                    'IM' => images
AIPS 2: NCOUNT        0                    Number of files to load.
AIPS 2: DOTABLE       1                    True (1.0) means load tables
AIPS 2:                                    for images.
AIPS 2: DOUVCOMP     -1                    >0 => compressed data (FITS)
AIPS 2: DOCONCAT     -1                    >0 -> if VLBA correlator data
AIPS 2:                                    append data to existing
AIPS 2: ** press RETURN for more, enter Q or next line to quit print **
#
AIPS 2:                                    files, or if no appropriate
AIPS 2:                                    files exist create a new file
AIPS 2:                                    and append all data to that
AIPS 2:                                    file.
AIPS 2: DOKEEP        0                    > 0 -> keep fully flagged
AIPS 2:                                    data records
AIPS 2: NPIECE        0                    Maximum uv table piece to
AIPS 2:                                    load (ignored for tape unless
AIPS 2:                                    NCOUNT = 1)
AIPS 2: ERROR        -1                    >= 2 -> do not use AIPS
AIPS 2:                                    history in the FITS file
AIPS 2: *****************************
AIPS 2:                                    Following adverbs are useful
AIPS 2:                                    only when reading VLBA IDI
AIPS 2:                                    distribution tapes.
AIPS 2: *****************************
AIPS 2: CLINT         0.5                  CL entry interval (min)
AIPS 2:                                    0 => 1 minute.
AIPS 2: SOURCES    *all ' '                Source list to accept.
AIPS 2: QUAL         -1                    Source qualifier -1=>all
AIPS 2: TIMERANG   *all 0                  Timerange selected
AIPS 2: BCHAN         1                    Lowest spectral channel
AIPS 2:                                    number to select in each IF.
AIPS 2:                                    0=>1
AIPS 2: ECHAN         0                    Highest spectral channel
AIPS 2: ** press RETURN for more, enter Q or next line to quit print **
#
AIPS 2:                                    number to select in each IF.
AIPS 2:                                    0=>highest
AIPS 2: BIF           0                    Lowest IF number 0=>1
AIPS 2: EIF           0                    Highest IF number 0=>all
AIPS 2: DIGICOR      -1                    Controls the application of
AIPS 2:                                    the VLBA and DIFX correlator
AIPS 2:                                    digital correction.
AIPS 2:                                    0,1,3 => perform corrections
AIPS 2:                                    2,4 => perform cross-power
AIPS 2:                                      corrections, do total-power
AIPS 2:                                      only if zero padding used.
AIPS 2:                                    -1 => do NOT perform
AIPS 2:                                      corrections.
AIPS 2:                                    3,4 => do even if not VLBA
AIPS 2:                                    SEE HELP for more details
AIPS 2: REFDATE    ' '                     Reference date. 'yyyymmdd'
AIPS 2:                                       before or = the obs date
AIPS 2:                                       ' ' => the obs date
AIPS 2: SELBAND       0                    Bandwidth to select (kHz)
AIPS 2: SELFREQ       0                    Frequency to select (MHz).
AIPS 2:                                    See HELP.
AIPS 2: FQTOL        -1                    Frequency tolerance assigned
AIPS 2:                                    to SELFREQ, FITLD will select
AIPS 2:                                    data with freq. of SELFREQ
AIPS 2:                                    +/- FQTOL.
AIPS 2: ** press RETURN for more, enter Q or next line to quit print **
#
AIPS 2:                                    The unit of FQTOL is kHz.
AIPS 2:                                    <=0 => 10 kHz
AIPS 2: WTTHRESH      0.7                  Flagging threshold based on
AIPS 2:                                    weights. See HELP.
AIPS 2:                                    0 => no flagging
AIPS 2:                                    1 => will flag ALL data
AIPS 2: OPCODE     ' '                     Specify if wish to keep VT
AIPS 2:                                    (VLBA Tape Statistics) table
AIPS 2:                                    and other tables.  See HELP.
AIPS 2:                                    '  ' => do not save tables
AIPS 2: ANTNAME    *all ' '                List antenna station names in
AIPS 2:                                    desired order (IDI data only)