[daip] Re: UVFLG Issues

[Eric Greisen]

landon at inaoep.mx writes:

 > AIPS 1: APARM         1           1        Clip on ampl. and weight
 > AIPS 1:               1           1        (single source data only)
 > AIPS 1:               1           1        1:lower limit of amplitude
 > AIPS 1:               1           1        2:upper limit of amplitude
 > AIPS 1:               1           1        3:limit of weight
 > AIPS 1:                                    The data with ampl. outside
 > AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
 > #
 > AIPS 1:                                    of a given range or  weight
 > AIPS 1:                                    less the given value are
 > AIPS 1:                                    flagged (unflagged)
 > AIPS 1:                                      Elevation flagging
 > AIPS 1:                                    (single and multisource)
 > AIPS 1:                                    4:elevation cutoff (deg)
 > AIPS 1:                                    APARM=0 => flagging(unflag.)
 > AIPS 1:                                    does not depend on APARM

 > Just to clarify, after i run this, there is no evidence of any unflagged
 > visibility in any plot.
 > Also, I ran PRTAB as suggested, but my file apparantly does not have an FG table
 > associated with it.

You did not say that this was a single-source file and that you set
FLAGVER = 0.

Look at your aparm values.  You have told the task to flag all
amplitudes nelow 1.0 Jy and all amplitudes above 1.0 Jy.  That will
not leave much data.

Eric Greisen