[daip] CALIB: problem with TABIO?
Dmitrijs Docenko
dima at MPA-Garching.MPG.DE
Tue Jun 19 09:50:19 EDT 2007
Hello!
I am a new AIPS user, but the problem does not seem to come out of this.
While making primary calibration with CALIB, I encountered a TABIO error
sttaing that the LRNO (logical record number?) is too high. Details are
below.
The file was produced from 2-IF, 2-FREQID file by applying UVCOP so that
it contains only one IF and FREQID.
>imh
AIPS 1: Image=MULTI (UV) Filename=L A IF1 FQ1 .L BAND. 1
AIPS 1: Telescope=VLA Receiver=VLA
AIPS 1: Observer=AR378 User #= 53
AIPS 1: Observ. date=17-MAY-1997 Map date=18-JUN-2007
AIPS 1: # visibilities 409565 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
AIPS 1: SOURCE FREQSEL
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 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: IF 1 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: FREQ 1 1.2850000E+09 1.00 6.2500000E+06 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 1950.00
AIPS 1: Maximum version number of extension files of type FQ 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 OF 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 1
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 1
AIPS 1: Maximum version number of extension files of type WX 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 SN is 1
AIPS 1: Keyword = 'CORRMODE' value = ' '
AIPS 1: Keyword = 'VLAIFS ' value = 'ABCD '
I was trying to calibrate the flux of secondary calibration source
2352+495 after the primary calibration source went through CALIB:
>inp
AIPS 1: CALIB: Task to determine calibration for data.
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: Input uv data.
AIPS 1: INNAME 'L A IF1 FQ1' UV file name (name)
AIPS 1: INCLASS 'L BAND' UV file name (class)
AIPS 1: INSEQ 1 UV file name (seq. #)
AIPS 1: INDISK 3 UV file disk drive #
AIPS 1: Data selection (multisource):
AIPS 1: CALSOUR '2352+495' Calibrator sources
AIPS 1: *rest ' '
AIPS 1: QUAL -1 Calibrator qualifier -1=>all
AIPS 1: CALCODE ' ' Calibrator code ' '=>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: TIMERANG *all 0 Time range to use.
AIPS 1: BCHAN 0 Lowest channel number 0=>all
AIPS 1: ECHAN 0 Highest channel number
AIPS 1: ANTENNAS *all 0 Antennas to select. 0=all
AIPS 1: DOFIT *all 0 Subset of ANTENNAS list for
AIPS 1: which solns are desired.
AIPS 1: ANTUSE *all 0 Mean gain is calculated
AIPS 1: (CPARM(2)>0) using only the
AIPS 1: listed antennas. See explain.
AIPS 1: SUBARRAY 0 Subarray, 0=>all
AIPS 1: UVRANGE 0 0 Range of uv distance for full
AIPS 1: weight
AIPS 1: WTUV 0 Weight outside UVRANGE 0=0.
AIPS 1: WEIGHTIT 1 Modify data weights function
AIPS 1: Cal. info for input:
AIPS 1: DOCALIB -1 > 0 calibrate data & weights
AIPS 1: > 99 do NOT calibrate weights
AIPS 1: GAINUSE 0 CL table to apply.
AIPS 1: DOPOL -1 If >0 correct polarization.
AIPS 1: BLVER -1 BL table to apply.
AIPS 1: FLAGVER 1 Flag table version
AIPS 1: DOBAND -1 If >0 apply bandpass cal.
AIPS 1: Method used depends on value
AIPS 1: of DOBAND (see HELP file).
AIPS 1: BPVER -1 Bandpass table version
AIPS 1: SMOOTH *all 0 Smoothing function. See
AIPS 1: HELP SMOOTH for details.
AIPS 1:
AIPS 1: CLEAN map. See HELP.
AIPS 1: IN2NAME ' ' Cleaned map name (name)
AIPS 1: IN2CLASS ' ' Cleaned map name (class)
AIPS 1: IN2SEQ 0 Cleaned map name (seq. #)
AIPS 1: IN2DISK 0 Cleaned map disk unit #
AIPS 1: INVERS 0 CC file version #.
AIPS 1: NCOMP *all 0 # comps to use for model.
AIPS 1: 1 value per field
AIPS 1: FLUX 0 Lowest CC component used.
AIPS 1: NMAPS 0 No. Clean map files
AIPS 1: CMETHOD ' ' Modeling method:
AIPS 1: 'DFT','GRID',' '
AIPS 1: CMODEL ' ' Model type: 'COMP','IMAG'
AIPS 1: SMODEL *all 0 Source model, 1=flux,2=x,3=y
AIPS 1: See HELP SMODEL for models.
AIPS 1:
AIPS 1: Output uv data file.
AIPS 1: OUTNAME ' ' UV file name (name)
AIPS 1: OUTCLASS ' ' UV file name (class)
AIPS 1: OUTSEQ 0 UV file name (seq. #)
AIPS 1: OUTDISK 1 UV file disk drive #
AIPS 1:
AIPS 1: Solution control adverbs:
AIPS 1: REFANT 9 Reference antenna
AIPS 1: SOLINT 0 Solution interval (min)
AIPS 1: SOLSUB 0 Solution subinterval
AIPS 1: SOLMIN 0 Min solution interval
AIPS 1: APARM 0 0 General parameters
AIPS 1: 0 0 1=min. no. antennas
AIPS 1: 0 2 2 > 0 => data divided
AIPS 1: *rest 0 3 > 0 => avg. RR,LL
AIPS 1: 5 > 0 => avg. IFs.
AIPS 1: 6=print level, 1=good,
AIPS 1: 2 closure, 3 SNR
AIPS 1: 7=SNR cutoff (0=>5)
AIPS 1: 8=max. ant. # (no AN)
AIPS 1: 9 > 0 => pass failed soln
AIPS 1: 10 < 99 cal output weights
AIPS 1: Phase-amplitude Parameters:
AIPS 1: DOFLAG 0 Flag on closure error?
AIPS 1: SOLTYPE ' ' Soln type,' ','L1','GCON',
AIPS 1: 'R', 'L1R', 'GCOR'
AIPS 1: SOLMODE 'A&P' Soln. mode: 'A&P','P','P!A',
AIPS 1: 'GCON',
AIPS 1: SOLCON 0 Gain constraint factor.
AIPS 1: MINAMPER 10 Amplitude closure error
AIPS 1: regarded as excessive in %
AIPS 1: MINPHSER 10 Phase closure error regarded
AIPS 1: as excessive in degrees
AIPS 1: CPARM 0 0 Phase-amp. parameters
AIPS 1: 0 0 1 = Min el for gain
AIPS 1: 1 *rest 0 normalization (deg)
AIPS 1: 2 >0 => normalize gain
AIPS 1: 3 avg. amp. closure err
AIPS 1: 4 avg. ph. closure err
AIPS 1: 5 >0 => scalar average
AIPS 1: 6 limit clipping in robust
AIPS 1: 7 limit display of closure
AIPS 1: errors
AIPS 1: SNVER 1 Output SN table, 0=>new table
AIPS 1: ANTWT *all 0 Ant. weights (0=>1.0)
AIPS 1: GAINERR *all 0 Std. Dev. of antenna gains.
AIPS 1: BADDISK *all 0 Disk no. not to use for
AIPS 1: scratch files.
Running this, I encounter an error after the calibration
seems to be actually finished:
nca-2 > CALIB1: Task CALIB (release of 31DEC07) begins
nca-2 > CALIB1: CALIB USING L A IF1 FQ1 . L BAND . 1 DISK= 3 USID= 53
nca-2 > CALIB1: Selecting the data
nca-2 > CALIB1: Doing cal transfer mode with point model for each source
nca-2 > CALIB1: This is not self-calibration
nca-2 > CALIB1: Dividing data by source flux densities
nca-2 > CALIB1: Determining solutions using amp-scalar averaging
nca-2 > CALIB1: Writing SN table 1
nca-2 > CALIB1: Closure errors at308/12:53:10 CAS_A_L1 IF no. 1 Rpol
nca-2 > CALIB1: 04-25 12.0% 1d
nca-2 > CALIB1: Antenna 4 had 1 excess closure errors, 1 printed
nca-2 > CALIB1: Antenna 25 had 1 excess closure errors, 1 printed
.... (a bit more closure errors below 15%) ....
nca-2 > CALIB1: Antenna 23 had 1 excess closure errors, 1 printed
nca-2 > CALIB1: TABIO: BAD LRNO = 47 LIMIT 46
nca-2 > CALIB1: TABNDX: TABIO ERROR 2
nca-2 > CALIB1: Purports to die of UNNATURAL causes
I would be very thankful for your help on eliminating this problem.
Yours,
Dmitrijs
--
**********************************************
Dmitrijs Docenko
Max-Planck-Institut fur Astrophysik
Karl-Schwarzschild-Str. 1
D-85741 Garching, Germany
Tel.:+49-89-30000-2237 Fax:+49-89-30000-2235
E-mail: dima at mpa-garching.mpg.de
URL: http://www.mpa-garching.mpg.de/~dima
**********************************************
More information about the Daip
mailing list