AIPS HELP file for VLBASUBS in 31DEC25

As of Wed Mar 26 18:37:11 2025

INPUTS

INNAME                             Input file name
INCLASS                            Input file class
INSEQ                              Input file sequence number
INDISK                             Disk number for input file
SUBARRAY          0.0     1000.0   1 -> put everything into one
                                        subarray
                                   2 -> automatically split into
                                        multiple subarrays
CLINT                              CL entry interval (min)
                                   0 => 0.25 minute.

          VLBASUBS is defined in the VLBAUTIL run file.

HELP SECTION

VLBASUBS
Type: Procedure
Use:  VLBASUBS is a procedure that will look for subarrays in VLBA data.

      Type RUN VLBAUTIL to make the VLBASUBS procedure available.

  INNAME.....The name of the file to be corrected. Wildcard characters
             are allowed.
  INCLASS....The class of the file to be corrected. Wildcard characters
             are allowed.
  INSEQ......The sequence number of the file to be corrected. Zero
             defaults to the highest sequence number matching INNAME,
             INCLASS, and INDISK.
  INDISK.....The disk drive number of the file to be corrected. Zero
             defaults to any disk.
  SUBARRAY...1 -> FITLD says there are subarrays but there are no real
             subarrays in the data
             2 -> Data will be automatically searched for subarrays and
             subarrays will be created if found.
  CLINT......Calibration table interval in minutes. This should normally
             be in the range 0.25 to 1.0 and is used when the
             calibration table is regenerated. A calibration interval of
             0.25 minute will be assumed if this is less than or equal
             to zero.

EXPLAIN SECTION

VLBASUBS:           Procedure to look for subarrays
Documentor:         Chris Flatters
Related Programs:   MSORT, USUBA, INDXR, VLBAUTIL

WHEN TO USE VLBASUBS

Use VLBASUBS to find subarrays in VLBA data. VLBASUBS will
check whether there might be more than one subarray present in
the data and if so will make sure that the data are sorted
correctly (MSORT), check for subarrays (USUBA), and then
rebuild the calibration (CL) and index (NX) tables (INDXR).

You should run VLBASUBS after you have finished loading the data
from tape but before you either change the polarization
structure of the data with FXPOL, load any calibration data for
non-VLBA telescopes, or apply the calibration data.

VLBASUBS is intended for all levels of VLBA users.