AIPS NRAO AIPS HELP file for AFILE in 31DEC18



As of Wed Jan 17 7:42:13 2018


AFILE: Task which sorts and edits MkIII correlator A-file.

INPUTS

INFILE                             Input A-file (text)
OUTFILE                            Output A-file (text)	
OPCODE                             'SORT' - will sort the file
                                   'EDIT' - will sort and edit
APARM                              Criteria used to determine
                                   if MkIII scan is acceptable.
                                   Only used if OPCODE='EDIT'
                                   APARM(1) = 1: 
                                      Edit on processing time.
                                   APARM(1) = 2: 
                                      Edit on quality factor
                                   APARM(1) = 3: 
                                      Edit on SNR
                                   APARM(1) = 4: 
                                      Edit on # secs in scan
                                   APARM(2): experiment number
                                    to accept, 0 => accept all.

HELP SECTION

AFILE
Task:  This task will sort and edit the A-file (text) that
       accompanies MkIII A tapes. It is expected that the user
       will have concatanated all A-files associated with an
       experiment before running this task. The purpose of
       editing is to remove duplicate scans from the A-file,
       the criteria for removing scans are set by the user 
       using APARM(1). The resultant file is then used in
       MK3IN to select the scans that the user wishes to read
       from the A tape.
Adverbs:
  INFILE.....Input A-file (text)
  OUTFILE....Output A-file (text)	
  OPCODE.....'SORT' - will sort the file
             'EDIT' - will sort and edit
  APARM......Criteria used to determine if MkIII scan is 
             acceptable. Only used if OPCODE='EDIT'
             If APARM(1) = 1, duplicate scans will be
             removed based on the processing date encoded in
             the AFILE. The scan with the latest processing
             date will be kept.
             IF APARM(1) = 2, duplicate scans will be removed
             based on the quality factor encoded in the AFILE,
             the scan with the highest quality factor will be
             kept.
             IF APARM(1) = 3, duplicate scans will be removed
             based on the signal-to-noise ratio encoded in the 
             AFILE, the scan with the highest quality factor 
             will be kept.
             IF APARM(1) = 4, duplicate scans will be removed
             based on the number of seconds of data in the scan,
             the scan with the highest quality factor will be
             kept.
             If APARM(2) = 0, AFILE will accept all experiment
             numbers. If APARM(2) > 0, AFILE will only accept
             those scans which are part of the experiment
             number specified. The experiment number is assigned
             at the correlator.

EXPLAIN SECTION


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