[daip] GPHAS
Michael Bietenholz
michael at polaris.phys.yorku.ca
Tue Aug 5 15:14:47 EDT 2003
Does anyone use GPHAS? Does it work?
I tried the version of 31DEC03; (2003.02.17:05:00:09). WHen I ran it, it
failed with the following messages:
GPHAS1 18:05:43 Task GPHAS (release of 31DEC03) begins
GPHAS1 18:05:43 GUVIN: Selecting Subarray 1
GPHAS1 18:05:43 OBJECT NAMED Input IS NOT DEFINED
GPHAS1 18:05:43 GUVIN: error 1
GPHAS1 18:05:43 GPHAS: error 1
I looked around a bit, and semi-randomly changed line 445 of the code
line # --------GPHAS.FOR-----------------------------------------------
442 CALL IN2OBJ (POPS, NKEY4, IKEY4, OKEY4, UVIN, IRET)
443 IF (IRET.NE.0) GO TO 990
444 C DOCALIB
445 CALL OGET ('Input', 'DOCALIB', TYPE, DIM, XDOCAL, CDUM, IRET)
446 IF (IRET.NE.0) GO TO 990
447 LTEMP = XDOCAL.GT.0.0
To read "CALL OGET (POPS, 'DOCALIB',...", just based on the other OGET
lines nearby. It actually ran after this modification.
However I have two questions:
a) Is this a sensible change to the code?
b) Not sure how to interpret the output file - all visibilities have
baseline REFANT-REFANT, identically 0 phases and weights, and
amplitudes ranging from aobut -300 to about +360. Which doesn't make
a lot of sense but maybe that's just me. I would have expected
baseline [special antenna]-REFANT, with +ive amplitudes and non-zero
phases.
michael bietenholz, always causing trouble :-)
----- Inputs and header of input uv-file FWIW-----------------
AIPS 1: GPHAS: Baseline dependent time averaging of "BT" order uv data
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME 'W056A1 ' Input UV name
AIPS 1: INCLASS 'MSORT ' Input UV class
AIPS 1: INSEQ 2 Input UV seq #
AIPS 1: INDISK 1 Input UV disk #
AIPS 1: IN2NAME ' ' input Image name
AIPS 1: IN2CLASS ' ' input image class
AIPS 1: IN2SEQ 0 input image seq #
AIPS 1: IN2DISK 0 input image disk #
AIPS 1: CMODEL ' ' 'PT', 'CC' ('CC')
AIPS 1: CMETHOD ' ' FT method, 'DFT','GRID',
AIPS 1: ' '=> choose fastest
AIPS 1: SMODEL 0.1 *rest 0 Pt source flux model
AIPS 1: (1) I-flux (0)
AIPS 1: (2) RA offset (asec) (0)
AIPS 1: (3) DEC offset (asec) (0)
AIPS 1: INVERS 0 CC table version to use (1)
AIPS 1: BCOMP *all 0 First CC comp (0=>1)
AIPS 1: NCOMP *all 0 Last CC comp (0=>highest)
AIPS 1: <0 => stop at first neg comp
AIPS 1: FLUX 0 Lowest CC comp to use
AIPS 1: NMAPS 1 Number of fields
AIPS 1: OUTNAME ' ' Output UV data name
AIPS 1: OUTCLASS ' ' Output UV data class
AIPS 1: OUTSEQ 0 Output UV seq. #
AIPS 1: OUTDISK 0 Output UV disk #
AIPS 1: CALSOUR 'J0955+69 ' Sources to process (' '=all)
AIPS 1: *rest ' '
AIPS 1: QUAL -1 Source ID numbers
AIPS 1: CALCODE ' ' Calcodes to process
AIPS 1: STOKES 'LL ' Pols to process
AIPS 1: BCHAN 0 First channel to
AIPS 1: ECHAN 0 Last channel to
AIPS 1: BIF 0 First IF to process
AIPS 1: EIF 0 Last IF to process
AIPS 1: DOCALIB 2 Apply calibration?
AIPS 1: = 2 calibrate weights
AIPS 1: FREQID -1 Which FQ # to use?
AIPS 1: SELBAND -1 Bandwidth(kHz)
AIPS 1: SELFREQ -1 Frequency(MHz)
AIPS 1: DOBAND -1 Do bandpass correction
AIPS 1: SMOOTH *all 0 Spectral smoothing
AIPS 1: ANTENNAS *all 0 Antennas to process
AIPS 1: SUBARRAY 0 Subarr to process
AIPS 1: FLAGVER 3 FG table (0=highest,<0=none)
AIPS 1: GAINUSE 8 CL(SN) table (0=high,<0=none)
AIPS 1: BPVER -1 BP table (<0=none)
AIPS 1: REFANT 4 Reference antenna
AIPS 1: =0 => set APARM(2)=2
AIPS 1: SOLINT 0 Avging time(sec)
AIPS 1: = 0.0 =>do not time average
AIPS 1: APARM 13 *rest 0 Task Enrichment Parameters
AIPS 1: (1) specify special antenna
AIPS 1: (2) choose ref antenna number
AIPS 1: for equivalent baseline
AIPS 1: = 0 => use specified REFANT
AIPS 1: = 1 => create new fictitous
AIPS 1: REFANT
AIPS 1: = 2 => use most frequently
AIPS 1: occuring REFANT in
AIPS 1: CL table
AIPS 1: (3) >0 means visibilities to
AIPS 1: normalized BEFORE being added
AIPS 1: BADDISK *all 0 avoid disk #'s (default none)
AIPS 1: Image=MULTI (UV) Filename=W056A1 .MSORT . 2
AIPS 1: Telescope=VLBA Receiver=VLBA
AIPS 1: Observer=W056 User #= 1477
AIPS 1: Observ. date=28-MAR-1999 Map date=27-JUL-2003
AIPS 1: # visibilities 740782 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN TIME1 BASELINE
AIPS 1: SOURCE FREQSEL INTTIM GATEID CORR-ID
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 1 -2.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 128 1.6340000E+09 1.00 1.2500000E+05 0.00
AIPS 1: IF 2 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: RA 1 00 00 00.000 1.00 0.000000 0.00
AIPS 1: DEC 1 00 00 00.000 1.00 0.000000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type AT is 1
AIPS 1: Maximum version number of extension files of type IM is 1
AIPS 1: Maximum version number of extension files of type CT is 1
AIPS 1: Maximum version number of extension files of type MC is 1
AIPS 1: Maximum version number of extension files of type OB is 1
AIPS 1: Maximum version number of extension files of type GC is 3
AIPS 1: Maximum version number of extension files of type TY is 3
AIPS 1: Maximum version number of extension files of type WX is 1
AIPS 1: Maximum version number of extension files of type PC is 2
AIPS 1: Maximum version number of extension files of type FQ 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 SU is 1
AIPS 1: Maximum version number of extension files of type CQ is 1
AIPS 1: Maximum version number of extension files of type FG is 3
AIPS 1: Maximum version number of extension files of type CL is 8
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type SN is 13
AIPS 1: Maximum version number of extension files of type BS is 1
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