[daip] Visibility number conflict in VLA data set for AB950 04Aug2002

[analysts at aoc.nrao.edu]

Hello,

We loaded a set of VLA archive data onto our FTP site for Sally
Laurent-Meuhleisen to download.  The VLA project is AB950 which
observed on 04 August 2002.  Sally and now Michael Rupen are concerned
by the fact that the channel '0' file has a different number of visibilities
than the associated LINE file.  Below is the IMHEAD information about each of
these files that we currently have loaded into AIPS on machine Agave.  We
attempted to re-FILLM the data into AIPS, but with similar results.

Here are the file sizes on our FIT site at /home/agave4/ftp/pub/:

-rw-rw-r--   1 analysts staff    109872000 Aug  7 11:13 AB950.020804.CH0
-rw-rw-r--   1 analysts staff    109872000 Aug  8 10:41 AB950.020804.CH0N
-rw-rw-r--   1 analysts staff    478143360 Aug  7 11:14 AB950.020804.LINE
-rw-rw-r--   1 analysts staff    478143360 Aug  8 10:41 AB950.020804.LINEN

Can you determine if and what the problem may be?

Regards,

Jason

>getn 1; imh
AIPS 1: Got(1)   disk= 2  user=  14   type=UV   AB950.020804.CH 0.1
AIPS 1: Image=MULTI     (UV)         Filename=AB950.020804.CH 0  .   1
AIPS 1: Telescope=VLA                Receiver=VLA
AIPS 1: Observer=AB950               User #=   14
AIPS 1: Observ. date=04-AUG-2002     Map date=07-AUG-2002
AIPS 1: # visibilities   1277948     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 1:            SOURCE  FREQSEL
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: COMPLEX      3   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: FREQ         1   1.3649000E+09       1.00  1.8750000E+07    0.00
AIPS 1: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    00 00 00.000       1.00       3600.000    0.00
AIPS 1: DEC          1    00 00 00.000       1.00       3600.000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type AN is   1
AIPS 1: Maximum version number of extension files of type NX is   1
AIPS 1: Maximum version number of extension files of type SU is   1
AIPS 1: Maximum version number of extension files of type FQ is   1
AIPS 1: Maximum version number of extension files of type CL is   1
AIPS 1: Maximum version number of extension files of type TY is   1
AIPS 1: Maximum version number of extension files of type WX is   1
AIPS 1: Keyword = 'OBSCHANS'  value =            8
AIPS 1: Keyword = 'CORRMODE'  value = '4       '
AIPS 1: Keyword = 'SELCHANS'  value =            7
AIPS 1: Keyword = 'VLAIFS  '  value = 'ABCD    '


>getn 6; imh
AIPS 1: Got(1)   disk= 2  user=  14   type=UV   AB950.020804.LINE.1
AIPS 1: Image=MULTI     (UV)         Filename=AB950.020804.LINE  .   1
AIPS 1: Telescope=VLA                Receiver=VLA
AIPS 1: Observer=AB950               User #=   14
AIPS 1: Observ. date=04-AUG-2002     Map date=07-AUG-2002
AIPS 1: # visibilities   1278554     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 1:            SOURCE  FREQSEL
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: COMPLEX      3   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: FREQ         7   1.3649000E+09       4.00  3.1250000E+06    0.00
AIPS 1: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    00 00 00.000       1.00       3600.000    0.00
AIPS 1: DEC          1    00 00 00.000       1.00       3600.000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type AN is   1
AIPS 1: Maximum version number of extension files of type NX is   1
AIPS 1: Maximum version number of extension files of type SU is   1
AIPS 1: Maximum version number of extension files of type FQ is   1
AIPS 1: Maximum version number of extension files of type CL is   1
AIPS 1: Maximum version number of extension files of type TY is   1
AIPS 1: Maximum version number of extension files of type WX is   1
AIPS 1: Keyword = 'OBSCHANS'  value =            8
AIPS 1: Keyword = 'CORRMODE'  value = '4       '
AIPS 1: Keyword = 'SELCHANS'  value =            7
AIPS 1: Keyword = 'VLAIFS  '  value = 'ABCD    '


End of Message