AIPS HELP file for REWGT in 31DEC22
As of Fri Mar 31 19:12:22 2023
REWGT: Scales uv data weights only
INNAME Input UV file name (name)
INCLASS Input UV file name (class)
INSEQ 0.0 9999.0 Input UV file name (seq. #)
INDISK 0.0 9.0 Input UV file disk unit #
OUTNAME Output UV file name (name)
OUTCLASS Output UV file name (class)
OUTSEQ -1.0 9999.0 Output UV file name (seq. #)
OUTDISK 0.0 9.0 Output UV file disk unit #.
OPTYPE 'SUBA', 'IF', 'FILE'
PBSIZE Scaling factors to use
SUBARRAY 0.0 Apply IF scaling only to this
subarray 0 -> all
BIF 0.0 Apply subarray scaling only
to this IF 0 -> all
INTEXT Text file e.g. from RFLAG
FQCENTER >= 0 -> center frequency axis
Task: This task will rescale uv data weights by a user-supplied
factor. The factor may be different for different subarrays or
different IFs. See task REAMP to scale uv data amplitudes with
corresponding changes to the weights REWGT can also read a
text file with weight factors in it. That file can be written
by RFLAG and is in the form used with BOXFILE in IMAGR.
INNAME.....Input UV file name (name). Standard defaults.
INCLASS....Input UV file name (class). Standard defaults.
INSEQ......Input UV file name (seq. #). 0 => highest.
INDISK.....Disk drive # of input UV file. 0 => any.
OUTNAME....Output UV file name (name). Standard defaults.
OUTCLASS...Output UV file name (class). Standard defaults.
OUTSEQ.....Output UV file name (seq. #). 0 => highest unique
OUTDISK....Disk drive # of output UV file. 0 => highest with
space for the file.
OPTYPE.....'SUBA' scaling array applies to subarrays 1-64
'FILE' scaling found in text file INTEXT
other scaling array applies to IFs 1-64
PBSIZE.....Scaling array: multiply subarray n by PBSIZE(n) on OPTYPE
'SUBA', else multiply IF n by PBSIZE(n).
SUBARRAY...Limit scaling to specified subarray on OPTYPE 'FILE' and
other. All subarrays are copied.
0 -> all subarrays are scaled.
BIF........Limit scaling to IF BIF on optype 'SUBA'. 0 -> all
and all IFs are copied anyway.
INTEXT.....Weight array text file. Each line has the form
W weight chan IF
with the W in column 1. IF blank or 0 means all IFs.
Channels not specified get scaling factor 1.0.
FQCENTER,..> 0 => Change frequency axis reference pixel to
Nchan / 2 + 1
else => do not change reference pixel