APPLY /FLAG
Keywords: imager

Next: COLLECT Up: APPLY Previous: APPLY PHASE Contents Index

###
APPLY /FLAG

            [CALIBRATE\]APPLY [AMPLI|DELAY|PHASE [Gain]] /FLAG [Threshold]

          Apply gain solution (in AMPLITUDE, DELAY or PHASE) and flag data with-
        out a corresponding valid gain solution.

          If the Threshold argument is present, all data with a  correction  ex-
        ceeding  that  threshold  are also flagged. This can be useful to filter
        out antennas that have unstable gains. A  threshold  of  90  degrees  in
        phase, or 1.3 in amplitude may be appropriate.

        The  optional Gain argument has no effect on the Threshold: it is always
        the gain value in the CGAINS array that is compared to the Threshold.

          USEFUL TRICK: If you forgot to flag the data while applying the  self-
        calibration  gain  solution,  you  can  still do it a posteriori without
        changing the amplitude and/or phase by using command
                  APPLY MODE 0 /FLAG Threshold
    where MODE is any of AMPLI, DELAY or PHASE.