Hi, <br><br>I am using the aips task BPASS for bandpass calibration and I encountered a kind of bizarre problem. <br><br>This is the situation: <br>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. <br>
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. <br>I deleted the entire FG extension table, and still when I run BPASS, it gives me this output: <br>
<br>platyp> BPASS1: Task BPASS (release of 31DEC08) begins<br>platyp> BPASS1: Bandpass table (amp & phase) will be normalized<br>platyp> BPASS1: Weights in solution will be channel-dependent<br>platyp> BPASS1: Doing no flagging this time<br>
platyp> BPASS1: Selecting the data<br>platyp> BPASS1: Dividing the spectral data by channel 0<br>platyp> BPASS1: BPCOPY: copied 7020 vis records for bandpass fitting<br>platyp> BPASS1: Determining solutions<br>
platyp> BPASS1: Writing BP table 3<br>platyp> BPASS1: Time= 0/ 06 48 50 IFs= 1 - 8 Chann= 1 - 64 Polzn=ALL<br>platyp> BPASS1: BASOLV: 63 flagged channels in IF 1<br>platyp> BPASS1: BASOLV: 38 flagged channels in IF 1<br>
platyp> BPASS1: BASOLV: 64 flagged channels in IF 3<br>platyp> BPASS1: BASOLV: 64 flagged channels in IF 3<br>platyp> BPASS1: BASOLV: 64 flagged channels in IF 4<br>platyp> BPASS1: BASOLV: 64 flagged channels in IF 4<br>
platyp> BPASS1: BASOLV: 63 flagged channels in IF 5<br>platyp> BPASS1: BASOLV: 64 flagged channels in IF 5<br>platyp> BPASS1: BASOLV: 26 flagged channels in IF 6<br>platyp> BPASS1: BASOLV: 36 flagged channels in IF 6<br>
platyp> BPASS1: BPSOL: wrote 14 records to the BP table<br>platyp> BPASS1: Appears to have ended successfully<br><br>And this is what imhe shows, there is no FG table: <br><br>AIPS 1: FREQSEL SOURCE INTTIM WEIGHT SCALE<br>
AIPS 1: ----------------------------------------------------------------<br>AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat<br>AIPS 1: COMPLEX 1 1.0000000E+00 1.00 1.0000000E+00 0.00<br>
AIPS 1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00<br>AIPS 1: FREQ 64 8.1000000E+08 1.00 -1.5625000E+05 0.00<br>AIPS 1: IF 8 1.0000000E+00 1.00 1.0000000E+00 0.00<br>
AIPS 1: RA 1 05 42 36.136 1.00 3600.000 0.00<br>AIPS 1: DEC 1 49 51 07.230 1.00 3600.000 0.00<br>AIPS 1: ----------------------------------------------------------------<br>
AIPS 1: Coordinate equinox 2000.00<br>AIPS 1: Maximum version number of extension files of type SU is 1<br>AIPS 1: Maximum version number of extension files of type AN is 1<br>AIPS 1: Maximum version number of extension files of type HI is 1<br>
AIPS 1: Maximum version number of extension files of type TY is 1<br>AIPS 1: Maximum version number of extension files of type GC is 1<br>AIPS 1: Maximum version number of extension files of type CL is 1<br>AIPS 1: Maximum version number of extension files of type SN is 1<br>
AIPS 1: Maximum version number of extension files of type FQ is 1<br>AIPS 1: Maximum version number of extension files of type NX is 1<br>AIPS 1: Maximum version number of extension files of type BP is 3<br><br>Any suggestions? Where does the flagged channels come from and how can I unflag it? <br>
<br>-Kitty <br>