[daip] AIPS imagr question
Stockdale, Christopher
christopher.stockdale at marquette.edu
Tue Jul 15 12:00:46 EDT 2008
Eric,
I am working with a summer student (Cyrus, cc'd in message) and he's been
doing very with AIPS all summer, but we've run into a snag.
We are trying to image from a split file and getting an odd message. He
had attempted a first pass and wanted to go back and re-image the data.
When re-imaging, we encountered a file management problem (I think).
We have deleted all of the previous images related to the split file and
re-split file from the multi-source dataset.
Still same problem.
Here are the IMAGR output and input for the file. If you need more, let
me know. I can't seem to find a fault in the inputs or the procedure.
Any thoughts you might have would be appreciated.
Thanks,
Chris
IMAGR1: Task IMAGR (release of 31DEC08) begins
IMAGR1: Doing no flagging this time
IMAGR1: Create 02HHX23JAN06.IMAGR . 1 (UV) on disk 8 cno 11
IMAGR1: Beginning channel 1 through 1 with 2 IFs
IMAGR1: IMACPY: Copied 35008 visibilities to be imaged
IMAGR1: QINIT: did a GET of 5120 Kwords, OFF 14914923
IMAGR1: UVWAIT: begin finding uniform weights
IMAGR1: UVWAIT: Average grid weight 6.560E+00
IMAGR1: UVWAIT: Adding temperance S 1.312E+00
IMAGR1: UVWAIT: begin applying uniform or other weights
IMAGR1: UVWAIT: Sum of weights in 1.850E+03 and out 4.410E+03
IMAGR1: UVWAIT: Noise is increased by a factor 1.260 due to weighting
IMAGR1: UVWAIT: Average summed weight 6.560E+00 over 70016 vis
IMAGR1: Create 02HHX23JAN06.IBM001. 1 (MA) on disk 7 cno 48
IMAGR1: ZCREAT: FILE DA07:CBD01D001.1ZP; ALREADY EXISTS
IMAGR1: CATDIR: WARNING - AN OLD HEADER FILE WAS PRESENT
IMAGR1: ZCREAT: FILE DA07:MAD01D001.1ZP; ALREADY EXISTS
IMAGR1: ZCREAT ERROR 1 FOR 02HHX23JAN06.ICL001. 1
IMAGR1: CATDIR: INCOMPLETE ID ON CLOSE OF CATNO 49
IMAGR1: IMCRET: ERROR 5 CREATING OUTPUT FILE
IMAGR1: IMCRET: ERROR CREATING IMAGE CLEAN field number 0001
IMAGR1: CLNOPN: ERROR OPENING CLEAN process object
IMAGR1: Deleting UV work file:
IMAGR1: Destroyed 1 extension files of type AN
IMAGR1: Destroyed 1 extension files of type FQ
IMAGR1: Destroyed UV image file: catno= 11 disk= 8
IMAGR1: Purports to die of UNNATURAL causes
IMAGR1: mirkwood 31DEC08 TST: Cpu= .4 Real= 1 IO= 11
AIPS 1: IMAGR: Wide field imaging/Clean task
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME '02HHX23JAN06' Input UV data (name)
AIPS 1: INCLASS 'SPLIT' Input UV data (class)
AIPS 1: INSEQ 1 Input UV data (seq. #)
AIPS 1: INDISK 6 Input UV data disk drive #
AIPS 1: SOURCES *all ' ' Source name
AIPS 1: QUAL -1 Calibrator qualifier -1=>all
AIPS 1: CALCODE ' ' Calibrator code ' '=>all
AIPS 1: TIMERANG *all 0 Time range to use
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: SUBARRAY 0 Sub-array, 0=>all
AIPS 1: ANTENNAS *all 0 Antennas to plot
AIPS 1: BASELINE *all 0 Baselines with ANTENNAS
AIPS 1: DOCALIB 0 > 0 calibrate data & weights
AIPS 1: > 99 do NOT calibrate weights
AIPS 1: GAINUSE 0 CL (or SN) table to apply
AIPS 1: DOPOL -1 If >0.5 correct polarization.
AIPS 1: BLVER -1 BL table to apply.
AIPS 1: FLAGVER 0 Flag table version
AIPS 1: DOBAND -1 If >0.5 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: STOKES ' ' Stokes parameters (see HELP)
AIPS 1: BCHAN 1 Low freq. channel 0 for cont.
AIPS 1: ECHAN 0 Highest freq channel
AIPS 1: CHANNEL 0 Restart channel number
AIPS 1: NCHAV 1 Number of chan. to average.
AIPS 1: CHINC 1 Channel incr. between maps.
AIPS 1: BIF 0 First IF in average.
AIPS 1: EIF 0 Last IF in average.
AIPS 1: OUTNAME ' ' Output image name (name)
AIPS 1: OUTDISK 7 Output image disk drive #
AIPS 1: OUTSEQ 0 Output seq. no.
AIPS 1: OUTVER 0 CC ver. no (Continuum only)
AIPS 1: *** SET OUTVER ON RESTARTS
AIPS 1: IN2NAME ' ' UV work file name
AIPS 1: IN2CLASS ' ' UV work file class
AIPS 1: IN2SEQ 0 UV work file seq
AIPS 1: *** SET TO KEEP WORK FILE
AIPS 1: IN2DISK 0 UV work file disk
AIPS 1: CELLSIZE .054 .054 (X,Y) size of grid in asec
AIPS 1: IMSIZE 4096 4096 Minimum image size
AIPS 1: NFIELD 1 Number of fields (max 4096)
AIPS 1: DO3DIMAG -1 > 0 => use different tangent
AIPS 1: points for each field
AIPS 1: FLDSIZE *all 0 Clean size of each field.
AIPS 1: RASHIFT *all 0 RA shift per field (asec)
AIPS 1: DECSHIFT *all 0 DEC shift per field (asec)
AIPS 1: UVTAPER 1022 1022 (U,V) Gaussian taper
AIPS 1: units are kilo-lambda
AIPS 1: UVRANGE 0 0 Min & max baseline (klambda)
AIPS 1: GUARD 0 0 x,y guard band fractional
AIPS 1: radius
AIPS 1: ROTATE 0 Rotate image CCW from N by
AIPS 1: ROTATE degrees
AIPS 1: ZEROSP *all 0 0-spacing fluxes and weights
AIPS 1: SEE HELP!!
AIPS 1: UVWTFN ' ' UV dist. weight function
AIPS 1: UVSIZE 0 0 Array size for doing uniform
AIPS 1: weights. 0 -> actual field
AIPS 1: size.
AIPS 1: ROBUST 0 Robustness power: -5 -> pure
AIPS 1: uniform weights, 5 => natural
AIPS 1: UVBOX 0 Additional rows and columns
AIPS 1: used in weighting.
AIPS 1: UVBXFN 1 Box function type when UVBOX
AIPS 1: > 0. 0 -> 1 round pill box.
AIPS 1: XTYPE 5 Conv. function type in x
AIPS 1: default spheroidal
AIPS 1: YTYPE 5 Conv. function type in y
AIPS 1: default spheroidal
AIPS 1: XPARM *all 0 Conv. function parms for x
AIPS 1: YPARM *all 0 Conv. function parms for y
AIPS 1: NITER 5000 Maximum # of Clean components
AIPS 1: BCOMP *all 0 Begin at BCOMP component
AIPS 1: Specify for each field.
AIPS 1: ALLOKAY 0 For restart: > 0 => beams
AIPS 1: okay, > 1 => work file too
AIPS 1: NBOXES 0 Number of boxes for Clean
AIPS 1: NB: field 1 only.
AIPS 1: CLBOX *all 0 Four coordinates for each box
AIPS 1: BOXFILE *all ' ' Input file of field params
AIPS 1: and Clean boxes; ' ' => use
AIPS 1: FLDSIZE, RASHIFT, DECSHIFT,
AIPS 1: NBOXES, CLBOX only.
AIPS 1: OBOXFILE *all ' ' Output file for final Clean
AIPS 1: boxes
AIPS 1: GAIN .1 Clean loop gain
AIPS 1: FLUX 0 Minimum Clean component (Jy)
AIPS 1: MINPATCH 51 Min. BEAM half-width in AP.
AIPS 1: BMAJ 0 FWHM(asec) major axis Clean
AIPS 1: restoring beam.
AIPS 1: BMIN 0 FWHM(asec) minor axis Clean
AIPS 1: restoring beam.
AIPS 1: BPA 0 Clean beam position angle
AIPS 1: OVERLAP 0 1 => restore components to
AIPS 1: overlapped fields, >=2=>
AIPS 1: expect overlaps in Cleaning
AIPS 1: PHAT 0 Prussian hat height.
AIPS 1: FACTOR 0 Speedup factor see HELP
AIPS 1: CMETHOD ' ' Modeling method:
AIPS 1: 'DFT','GRID',' '
AIPS 1: IMAGRPRM *all 0 Task enrichment parameters
AIPS 1: (1) Antenna diameter (m)
AIPS 1: (2) Source Spectral index
AIPS 1: (3) Frequency scaling factor
AIPS 1: (4) > 0 -> SDI Clean factor
AIPS 1: (5) >0 => scale residuals
AIPS 1: (6) Half-width in x of box
AIPS 1: (7) Half-width in y of box
AIPS 1: (8) Filter components whose
AIPS 1: neighborhood is weaker than
AIPS 1: IMAGRPRM(8) Jy. 0 -> don't
AIPS 1: (9) Radius in pixels for the
AIPS 1: IMAGRPRM(8) test.
AIPS 1: (10) multiplier of image size
AIPS 1: to get beam size: 0 => 2;
AIPS 1: 2, 1, 0.5 0.25 supported
AIPS 1: (11-16) Multi-resolution
AIPS 1: added controls
AIPS 1: (17) spectral index radius
AIPS 1: 0 -> no correction
AIPS 1: (19) Dynamic range limit
AIPS 1: (20) Retry factor (see help)
AIPS 1: NGAUSS 0 Number of resolutions to use
AIPS 1: WGAUSS *all 0 Resolutions in arc sec >= 0
AIPS 1: FGAUSS *all 0 Minimum flux for each resol.
AIPS 1: MAXPIXEL 0 Maximum pixels searched in
AIPS 1: each major cycle.
AIPS 1: IN3NAME ' ' Spectral index image name
AIPS 1: IN3CLASS ' ' Spectral index image class
AIPS 1: IN3SEQ 0 Spectral index image sequence
AIPS 1: number
AIPS 1: IN3DISK 0 Spectral index image disk
AIPS 1: IN4NAME ' ' Spectral curvature name
AIPS 1: IN4CLASS ' ' Spectral curvature class
AIPS 1: IN4SEQ 0 Spectral curvature sequence
AIPS 1: number
AIPS 1: IN4DISK 0 Spectral curvature disk
AIPS 1: FQTOL -1 Frequency tolerance in kHz
AIPS 1: (primary beam & spec index)
AIPS 1: DOTV 1 Display residuals on TV ?
AIPS 1: Start with field = DOTV
AIPS 1: GRCHAN 0 Graphics channel of boundary
AIPS 1: BADDISK *all 0 Disks to avoid for scratch.
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