[daip] Problem with BPASS

[Kitty Lo]

Hi,

I am using the aips task BPASS for bandpass calibration and I encountered a
kind of bizarre problem.

This is the situation:
The first time I ran BPASS I realised I put in the wrong parameters and just
lazily ctrl-C out of AIPS and restarted aips again. Then I realised it was
in the middle of writing to a scratch file which appeared so I used ZAP to
delete it.
After that, no matter what I do, it keeps thinking I have some flags in my
data, which I did the first time I ran BPASS.
I deleted the entire FG extension table, and still when I run BPASS, it
gives me this output:

platyp> BPASS1: Task BPASS  (release of 31DEC08) begins
platyp> BPASS1: Bandpass table (amp & phase) will be normalized
platyp> BPASS1: Weights in solution will be channel-dependent
platyp> BPASS1: Doing no flagging this time
platyp> BPASS1: Selecting the data
platyp> BPASS1: Dividing the spectral data by channel 0
platyp> BPASS1: BPCOPY: copied      7020 vis records for bandpass fitting
platyp> BPASS1: Determining solutions
platyp> BPASS1: Writing BP table    3
platyp> BPASS1:  Time=   0/ 06 48 50 IFs=  1 -   8  Chann=   1 -   64
Polzn=ALL
platyp> BPASS1: BASOLV:   63 flagged channels in IF  1
platyp> BPASS1: BASOLV:   38 flagged channels in IF  1
platyp> BPASS1: BASOLV:   64 flagged channels in IF  3
platyp> BPASS1: BASOLV:   64 flagged channels in IF  3
platyp> BPASS1: BASOLV:   64 flagged channels in IF  4
platyp> BPASS1: BASOLV:   64 flagged channels in IF  4
platyp> BPASS1: BASOLV:   63 flagged channels in IF  5
platyp> BPASS1: BASOLV:   64 flagged channels in IF  5
platyp> BPASS1: BASOLV:   26 flagged channels in IF  6
platyp> BPASS1: BASOLV:   36 flagged channels in IF  6
platyp> BPASS1: BPSOL: wrote   14 records to the BP table
platyp> BPASS1: Appears to have ended successfully

And this is what imhe shows, there is no FG table:

AIPS 1:            FREQSEL  SOURCE  INTTIM  WEIGHT  SCALE
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: COMPLEX      1   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: STOKES       4  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: FREQ        64   8.1000000E+08       1.00 -1.5625000E+05    0.00
AIPS 1: IF           8   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    05 42 36.136       1.00       3600.000    0.00
AIPS 1: DEC          1    49 51 07.230       1.00       3600.000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type SU is   1
AIPS 1: Maximum version number of extension files of type AN is   1
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type TY is   1
AIPS 1: Maximum version number of extension files of type GC is   1
AIPS 1: Maximum version number of extension files of type CL is   1
AIPS 1: Maximum version number of extension files of type SN is   1
AIPS 1: Maximum version number of extension files of type FQ is   1
AIPS 1: Maximum version number of extension files of type NX is   1
AIPS 1: Maximum version number of extension files of type BP is   3

Any suggestions? Where does the flagged channels come from and how can I
unflag it?

-Kitty
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