[daip] Re: WSRT Multiple IF data in AIPS....
Nissim Kanekar
nissim at astro.rug.nl
Wed Jul 16 12:17:15 EDT 2003
Hi Eric,
Thanks a lot for the info ! Two pairs of FQ and SU tables are attached.
The first (DBCON.SU, DBCON.FQ) were the final ones, obtained using DBCON
to combine separate FITS files, each containing 4 IFs, but different
sources. The second (3C286.SU, 3C286.FQ) are the initial ones from one
of the input files to DBCON. It appears tha the problem lies with DBCON as
the original files, 3C286.SU and 3C286.FQ, both show 4 IFs while DBCON.SU
shows just 1 (DBCON.FQ shows all 4). The IMHEADER of the DBCON'd file is
attached below this mail, followed by that of the original file. I'll take
a shot at changing the number of IFs back to 4 in the DBCON'd SU table
next and will get back.
Many thanks again !
Best regards,
Nissim
----------------------------------------------------------------------------
1. IMHEADER of the DBCON'd file
----------------------------------------------------------------------------
AIPS 2: Image=MULTI (UV) Filename=MULTI .DBCON . 3
AIPS 2: Telescope=WSRT Receiver=WSRT
AIPS 2: Observer=ProcessD User #= 155
AIPS 2: Observ. date=22-JUN-2003 Map date=15-JUL-2003
AIPS 2: # visibilities 42735 Sort order TB
AIPS 2: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN TIME1 BASELINE
AIPS 2: FREQSEL SOURCE INTTIM WEIGHT SCALE
AIPS 2: ----------------------------------------------------------------
AIPS 2: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 2: COMPLEX 1 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 2: STOKES 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 2: FREQ 256 1.2933975E+09 1.00 -2.4414062E+03 0.00
AIPS 2: IF 4 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 2: RA 1 13 31 08.288 1.00 3600.000 0.00
AIPS 2: DEC 1 30 30 32.957 1.00 3600.000 0.00
AIPS 2: ----------------------------------------------------------------
AIPS 2: Coordinate equinox 2000.00
AIPS 2: Maximum version number of extension files of type SU is 1
AIPS 2: Maximum version number of extension files of type AN is 1
AIPS 2: Maximum version number of extension files of type HI is 1
AIPS 2: Maximum version number of extension files of type TY is 1
AIPS 2: Maximum version number of extension files of type GC is 1
AIPS 2: Maximum version number of extension files of type CL is 3
AIPS 2: Maximum version number of extension files of type SN is 4
AIPS 2: Maximum version number of extension files of type FQ is 1
AIPS 2: Maximum version number of extension files of type NX is 1
AIPS 2: Maximum version number of extension files of type FG is 1
------------------------------------------------------------------------------
2. IMHEADER of the original FITS file
-----------------------------------------------------------------------------
AIPS 2: Image=MULTI (UV) Filename=MULTI .UVDATA. 1
AIPS 2: Telescope=WSRT Receiver=WSRT
AIPS 2: Observer=ProcessD User #= 156
AIPS 2: Observ. date=22-JUN-2003 Map date=16-JUL-2003
AIPS 2: # visibilities 2100 Sort order TB
AIPS 2: Rand axes: UU-L VV-L WW-L TIME1 BASELINE FREQSEL SOURCE
AIPS 2: INTTIM WEIGHT SCALE
AIPS 2: ----------------------------------------------------------------
AIPS 2: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 2: COMPLEX 1 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 2: STOKES 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 2: FREQ 256 1.2930850E+09 129.00 -2.4414062E+03 0.00
AIPS 2: IF 4 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 2: RA 1 13 31 08.288 1.00 3600.000 0.00
AIPS 2: DEC 1 30 30 32.957 1.00 3600.000 0.00
AIPS 2: ----------------------------------------------------------------
AIPS 2: Coordinate equinox 2000.00
AIPS 2: Maximum version number of extension files of type HI is 1
AIPS 2: Maximum version number of extension files of type FQ is 1
AIPS 2: Maximum version number of extension files of type AN is 1
AIPS 2: Maximum version number of extension files of type SU is 1
AIPS 2: Maximum version number of extension files of type TY is 1
AIPS 2: Maximum version number of extension files of type GC is 1
AIPS 2: Maximum version number of extension files of type CL is 1
AIPS 2: Maximum version number of extension files of type NX is 1
On Wed, 16 Jul 2003, Eric Greisen wrote:
>
> I am unfamiliar with the WSRT data in AIPS. FITLD applies IF
> selection only to VLBA Correlator data in the IDI format. Plain FITS
> files have no data selection done in loading. However, all the others
> should work.
>
> I will need a lot more info. Probably a good start will be the
> IMHEADER of the data set you have just loaded. A PRTAB of the FQ
> and SU tables would also be good.
>
> I am unsure about BPASS's ability to do only one IF - that may be a
> more general bug. Most VLA line data have only 1 IF and users mostly
> want all IFs to be calibrated...
>
> The SPLAT, UVCOP, etc suggest that we have a variety of possible
> errors in the table formats or something...
>
> Eric Greisen
>
--
-------------------------------
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Phone : +31 - 50 - 363 4067 Phone : +31 - 50 - 3601438
e-mail : nissim at astro.rug.nl
-------------- next part --------------
socrates PRTAB(31DEC02) 155 16-JUL-2003 17:59:00 Page 1
MULTI .DBCON . 3 Disk= 1 SU Table version 1
Title: AIPS UV DATA FILE SOURCE TABLE
Created by AVSPC on 15-JUL-2003 18:21:00
Last written by SETJY on 15-JUL-2003 20:27:53
Ncol 19 Nrow 2 Sort cols:
Table has 4 keyword-value pairs:
NO_IF = 1
VELTYP =
VELDEF =
FREQID = 1
Table can be written as a FITS ASCII table
COL. NO. 1 2 3 4 5 6 7 8 9 10
ROW ID. NO. SOURCE QUAL CALCODE IFLUX QFLUX UFLUX VFLUX FREQOFF BANDWIDTH
NUMBER JY JY JY JY HZ HZ
1 1 3C286 0 1.516E+01 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 -4.687500E+05
2 2 PKS1413+135 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 -4.687500E+05
socrates PRTAB(31DEC02) 155 16-JUL-2003 17:59:00 Page 2
COL. NO. 11 12 13 14 15 16 17 18
ROW RAEPO DECEPO EPOCH RAAPP DECAPP LSRVEL RESTFREQ PMRA
NUMBER DEGREES DEGREES YEARS DEGREES DEGREES M/SEC HZ DEG/DAY
1 -1.572155E+02 3.050915E+01 2.000000E+03 -1.571755E+02 3.049496E+01 -6.986660E+04 0.000000E+00 0.000000E+00
2 -1.460050E+02 1.333992E+01 2.000000E+03 -1.459631E+02 1.332561E+01 0.000000E+00 0.000000E+00 0.000000E+00
socrates PRTAB(31DEC02) 155 16-JUL-2003 17:59:00 Page 3
COL. NO. 19
ROW PMDEC
NUMBER DEG/DAY
1 0.000000E+00
2 0.000000E+00
-------------- next part --------------
socrates PRTAB(31DEC02) 155 16-JUL-2003 17:58:50 Page 1
MULTI .DBCON . 3 Disk= 1 FQ Table version 1
Title: AIPS UV DATA FILE FREQUENCY TABLE
Created by DBCON on 15-JUL-2003 18:05:10
Last written by DBCON on 15-JUL-2003 18:05:10
Ncol 5 Nrow 1 Sort cols:
Table has 1 keyword-value pairs:
NO_IF = 4
Table format incompatable with FITS ASCII tables
COL. NO. 1 2 3 4 5
ROW FRQSEL IF FREQ CH WIDTH TOTAL BAN SIDEBAND
NUMBER HZ HZ HZ
1 1 0.000000E+00 -2.441E+03 6.250E+05 1
1 4.264500E+07 -2.441E+03 6.250E+05 1
1 4.422000E+07 -2.441E+03 6.250E+05 1
1 8.686000E+07 -2.441E+03 6.250E+05 1
-------------- next part --------------
socrates PRTAB(31DEC02) 155 16-JUL-2003 18:07:41 Page 1
MULTI .DBCON . 3 Disk= 1 FQ Table version 1
Title: AIPS UV DATA FILE FREQUENCY TABLE
Created by DBCON on 15-JUL-2003 18:05:10
Last written by DBCON on 15-JUL-2003 18:05:10
Ncol 5 Nrow 1 Sort cols:
Table has 1 keyword-value pairs:
NO_IF = 4
Table format incompatable with FITS ASCII tables
COL. NO. 1 2 3 4 5
ROW FRQSEL IF FREQ CH WIDTH TOTAL BAN SIDEBAND
NUMBER HZ HZ HZ
1 1 0.000000E+00 -2.441E+03 6.250E+05 1
1 4.264500E+07 -2.441E+03 6.250E+05 1
1 4.422000E+07 -2.441E+03 6.250E+05 1
1 8.686000E+07 -2.441E+03 6.250E+05 1
-------------- next part --------------
socrates PRTAB(31DEC02) 155 16-JUL-2003 18:07:34 Page 1
MULTI .DBCON . 3 Disk= 1 SU Table version 1
Title: AIPS UV DATA FILE SOURCE TABLE
Created by AVSPC on 15-JUL-2003 18:21:00
Last written by SETJY on 15-JUL-2003 20:27:53
Ncol 19 Nrow 2 Sort cols:
Table has 4 keyword-value pairs:
NO_IF = 1
VELTYP =
VELDEF =
FREQID = 1
Table can be written as a FITS ASCII table
COL. NO. 1 2 3 4 5 6 7 8 9 10
ROW ID. NO. SOURCE QUAL CALCODE IFLUX QFLUX UFLUX VFLUX FREQOFF BANDWIDTH
NUMBER JY JY JY JY HZ HZ
1 1 3C286 0 1.516E+01 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 -4.687500E+05
2 2 PKS1413+135 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 -4.687500E+05
socrates PRTAB(31DEC02) 155 16-JUL-2003 18:07:34 Page 2
COL. NO. 11 12 13 14 15 16 17 18
ROW RAEPO DECEPO EPOCH RAAPP DECAPP LSRVEL RESTFREQ PMRA
NUMBER DEGREES DEGREES YEARS DEGREES DEGREES M/SEC HZ DEG/DAY
1 -1.572155E+02 3.050915E+01 2.000000E+03 -1.571755E+02 3.049496E+01 -6.986660E+04 0.000000E+00 0.000000E+00
2 -1.460050E+02 1.333992E+01 2.000000E+03 -1.459631E+02 1.332561E+01 0.000000E+00 0.000000E+00 0.000000E+00
socrates PRTAB(31DEC02) 155 16-JUL-2003 18:07:34 Page 3
COL. NO. 19
ROW PMDEC
NUMBER DEG/DAY
1 0.000000E+00
2 0.000000E+00
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