AIPS HELP file for PCASS in 31DEC18
As of Fri Oct 19 18:25:07 2018
PCASS: Fits pulse-cal tables for amplitude bandpass
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 #
INVERS 0.0 Table version to plot
FREQID 0.0 Frequency ID code included
SUBARRAY 0.0 Subarray to include 0 -> all
CALSOUR Bandpass calibration sources
' ' -> all sources
BPARM (1) > 0 use vector amplitude
(2) > 0 incl residual phase
(3) > 0 take PC as power not
(4) > 0 average all scans
together, else each
cal scan makes a BP
record each antenna
BADDISK Disks to avoid for scratch
Use: To fit pulse-cal amplitudes to generate a bandpass table.
Use PCRMS with APARM(6) > 0 to generate an edited PC table
version containing all edge channels. This will avoid internal
bad PC channels and bad times in the averages but leave the
edge channels for fitting the edges of the bandpass. The PC
spectrum is interpolated to the set of visibility frequencies
in writing the BP table.
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.
INVERS.....Specifies the version of the PC table to be read as
input. 0 -> highest.
FREQID.....Specifies which frequency ID to include. 0 => all
SUBARRAY...The subarray number to include. 0 => all
CALSOUR....List of sources for which bandpass response functions are
to be determined. All ' ' = all sources; a "-" before a
source name means all except ANY source named.
BPARM......The task computes the scan average of the PC table
amplitudes plus the residual (phase-corrected only) reals
and imaginaries. Which of these are used is controlled
(1) > 0 -> use vector aveage for amplitude, else use
(2) > 0 -> use vector average of residuals for phase,
else BP phase set to 0.
(3) > 0 -> take the PC amplitudes as powers rather than
voltages (so the BP amplitude is the sqrt of
the PC amplitude). Else take the PC amp as a
voltage just like the BP values.
Zero is probably correct, try +1 for sqrt or
-1 for square if you want to experiment.
(4) > 0 -> average all calibration scans together for an
antenna before writing a single BP record for
<=0 -> produce a BP record for each calibration scan
for each antenna.
BADDISK....The disk numbers to avoid for scratch files (sorting