[daip] fatal CLCAL error in 31DEC03 AIPS
Daniel Lebach
dlebach at cfa.harvard.edu
Wed Jun 4 17:01:38 EDT 2003
Hello,
For years I have run a very basic CLCAL operation with an input
SN table that was generated by TBIN. Unfortunately, when I use
the 31DEC03 version of CLCAL, the operation crashes:
>imh
AIPS 1: Image=MULTI (UV) Filename=BR080B .UVCOP . 2
AIPS 1: Telescope=VLBA Receiver=VLBA
AIPS 1: Observer=BR080 User #= 2101
AIPS 1: Observ. date=14-JUL-2002 Map date=10-FEB-2003
AIPS 1: # visibilities 875726 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 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 16 8.4055213E+09 8.53 5.0000000E+05 0.00
AIPS 1: IF 4 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: RA 1 00 00 00.000 1.00 3600.000 0.00
AIPS 1: DEC 1 00 00 00.000 1.00 3600.000 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 FQ 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 OB is 1
AIPS 1: Maximum version number of extension files of type WX 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 CL is 9
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 1
AIPS 1: Maximum version number of extension files of type GC is 3
AIPS 1: Maximum version number of extension files of type IM is 1
AIPS 1: Maximum version number of extension files of type MC is 2
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 9
AIPS 1: Maximum version number of extension files of type SU is 1
AIPS 1: Maximum version number of extension files of type TY is 3
AIPS 1: Maximum version number of extension files of type PC is 1
AIPS 1: Maximum version number of extension files of type BP is 1
AIPS 1: Keyword = 'OLDRFQ ' value = 8.41349000D+09
AIPS 1: Keyword = 'SUBARRAY' value = 1
>inp
AIPS 1: CLCAL Task to manage SN and CL calibration tables
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME 'BR080B ' Input UV file name (name)
AIPS 1: INCLASS 'UVCOP ' Input UV file name (class)
AIPS 1: INSEQ 2 Input UV file name (seq. #)
AIPS 1: INDISK 5 Input UV file disk unit #
AIPS 1: SOURCES *all ' ' Source list to calibrate
AIPS 1: SOUCODE ' ' Source "Cal codes"
AIPS 1: CALSOUR *all ' ' Cal sources for calibration
AIPS 1: QUAL -1 Source qualifier -1=>all
AIPS 1: CALCODE ' ' Calibrator code ' '=>all
AIPS 1: TIMERANG *all 0 Time range to calibrate
AIPS 1: SUBARRAY 0 Subarray, 0=>all,
AIPS 1: ANTENNAS *all 0 Antennas selected, 0=> all
AIPS 1: SELBAND -1 Bandwidth to select (kHz)
AIPS 1: SELFREQ -1 Frequency to select (MHz)
AIPS 1: FREQID -1 Freq. ID to select.
AIPS 1: OPCODE 'CALI' Operation 'MERG','CALI',
AIPS 1: 'SMOO','CALP'; ' ' => 'CALI'
AIPS 1: INTERPOL 'SELF' Interpolation function,
AIPS 1: choices are: '2PT','SIMP',
AIPS 1: 'AMBG','CUBE','SELF','POLY'
AIPS 1: see HELP for more details.
AIPS 1: CUTOFF 0 Interpolation limit in
AIPS 1: time (min); 0=> no limit.
AIPS 1: SAMPTYPE ' ' Smoothing function
AIPS 1: BPARM *all 0 Smoothing parameters
AIPS 1: ICUT 0 Cutoff for functional forms
AIPS 1: DOBLANK 1 Blanked value interpolation
AIPS 1: DOBTWEEN 1 > 0 -> smooth all sources
AIPS 1: together; else separate them
AIPS 1: SMOTYPE ' ' Data to smooth
AIPS 1: SNVER 8 Input SN table, 0=>all.
AIPS 1: GAINVER 7 Input Cal table 0=>high
AIPS 1: GAINUSE 10 Output CAL table 0=>high+1
AIPS 1: REFANT 7 Reference antenna 0=>pick.
AIPS 1: BADDISK 1 *rest 0 Disks to avoid for scratch
>go clcal
CLCAL1: Task CLCAL (release of 31DEC03) begins
CLCAL1: Using interpolation mode SELF
CLCAL1: Processing SN table 8
CLCAL1: WARNING: SN table 8 has already been applied
CLCAL1: Adjusting solutions to a common reference antenna = 7
forrtl: error (75): floating point exception
AIPS 1: TASK QUIT WITHOUT RESUMING ME
AIPS 1: Begin check for any 'standard' scratch files
AIPS 1: Scratch files -- destroyed: 0 still active: 0
AIPS 1: Resumes
>
Can you identify the problem?
A duplicate run of CLCAL in 31DEC02 AIPS worked perfectly fine,
as it always has. In fact, CL 9 is the output of the operation
in 31DEC02 AIPS that you see crashing above in 31DEC03 AIPS.
Have I set one of the new adverbs wrong in CLCAL? A few efforts
with different adverb values produced the same results.
I have made a TASAV file available to you via anonymous ftp
to cfa-ftp.harvard.edu . Directory is /outgoing/del , file name
is br080b.tasav.fits.gz
Best regards,
Dan
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