[daip] UVCOP error
Christopher Hales
chales at nrao.edu
Tue Nov 19 12:16:26 EST 2013
> Christopher Hales wrote:
>> Dear Eric,
>>
>> When I run UVCOP I encounter the following error in the message server:
>>
>> echidn> UVCOP1: Task UVCOP (release of 31DEC13) begins
>> echidn> UVCOP1: Create 10-25F .UVEVLA. 1 (UV) on disk 1 cno 2
>> echidn> UVCOP1: Applying flag table version 1 to the data
>> echidn> UVCOP1: ZDAOPN: DELAY 1
>> echidn> UVCOP1: ZDAOPN: DELAY 2
>> echidn> UVCOP1: UVINIT: LREC, NPIO = 3079 0 ILLEGAL
>> echidn> UVCOP1: UVINIT: OR NVIS, BUFSZ, OR BO = 02390016 1
>> ILLEGAL
>> echidn> UVCOP1: COPYUV: ERROR 2 INITING OUTPUT VIS FILE
>> echidn> UVCOP1: Destroyed 1 extension files of type FQ
>> echidn> UVCOP1: Destroyed UV image file: catno= 2 disk= 1
>> echidn> UVCOP1: Purports to die of UNNATURAL causes
>> echidn> UVCOP1: echidna 31DEC13 TST: Cpu= 0.0 Real= 2
>>
>>
>> It seems to be having trouble forming a new vis file. I'm not an AIPS pro,
>> so I'm having trouble tracking down the cause of this error.
>>
>> Could you please advise?
>
> The message appears to be saying that there are no visibilities selected.
> Since your UVCOP only contains 2 interesting adverbs (FLAGVER and
> UVCOPP(3)=1) this suggests that there are no visibilities in the input data
> set. Have you looked at IMHEADER, LISTR (OPTYPE='SCAN'), PRTUV, etc. to make
> sure that you have actually read in data?
>
> The BDF2AIPS error may have been fatal. Did you do BDFLIST and what adverbs
> did you select in BDF2AIPS?
>
> Eric Greisen
Oh dear, I misread the LISTR output. No visibilities were read in -- the
entry for "No. vis" for each source is 0.
I have attached the LISTR output to this email.
My entries for BDF2AIPS are:
default bdf2aips
asdmfile 'MYAREA:13B-266.sb27248272.eb28094627.56590.41308579861
outname '10-25'
nchan 64
bdf2aips
Chris
ps I need to head to ABQ for an appointment, so I will be out of the
office until around 4pm. Just thought I'd let you know in case you are
waiting on a reply from me.
>
>
>>
>> For reference, I have listed my entries to UVCOP below. I also show output
>> from PCAT.
>>
>> For broader context, I am using BDF2AIPS to import an SDM-BDF (VLA data).
>> I then want to apply the online flags using UVCOP, then write out a uvfits
>> file using FITAB. I will then import into CASA using importuvfits. The
>> reason for my AIPS detour (rather than using CASA's importevla) is because
>> my SDM-BDF has 15 spw's with 2048 channels and 4 spw's with 64 channels. I
>> only need access to the latter, and on a fast timescale. Not sure if it's
>> worth mentioning, but I note that the BDF2AIPS log file contains the
>> following error:
>> BDFIn: Error 20131119T071525 GetData: Frequencies inconsistent
>> 1015000000.000000 != 1768000000.000000, IF 1
>> BDFIn: Error 20131119T071525 Occured at file BDFIn.c: line 2095
>> (GetData)
>>
>> Thank you.
>>
>> Chris
>>
>>
>>
>>
>> > inp
>> AIPS 1: UVCOP Task to copy selected times and channels of uv data.
>> AIPS 1: Adverbs Values Comments
>> AIPS 1: ----------------------------------------------------------------
>> AIPS 1: INNAME '10-25' Input UV file name (name)
>> AIPS 1: INCLASS 'UVEVLA' Input UV file name (class)
>> AIPS 1: INSEQ 1 Input UV file name (seq. #)
>> AIPS 1: INDISK 1 Input UV file disk unit #
>> AIPS 1: OUTNAME '10-25F' Output UV file name (name)
>> AIPS 1: OUTCLASS 'UVEVLA' Output UV file name (class)
>> AIPS 1: OUTSEQ 0 Output UV file name (seq. #)
>> AIPS 1: OUTDISK 1 Output UV file disk unit #.
>> AIPS 1: SELBAND -1 Bandwidth to select (kHz)
>> AIPS 1: SELFREQ -1 Frequency to select (MHz)
>> AIPS 1: FREQID -1 Freq. ID to select. 0=> all
>> AIPS 1: BCHAN 1 First channel selected.
>> AIPS 1: ECHAN 0 Last channel selected.
>> AIPS 1: BIF 0 Lowest IF number 0=>all
>> AIPS 1: EIF 0 Highest IF number 0=>all
>> AIPS 1: SOURCES *all ' ' Source list
>> AIPS 1: QUAL -1 Source qualifier -1=>all
>> AIPS 1: UVRANGE 0 0 Annulus in uv plane selected
>> AIPS 1: (thousands of wavelengths)
>> AIPS 1: TIMERANG *all 0 Timerange:
>> AIPS 1: 1-4 = start day,hr,min,sec
>> AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
>> #
>> AIPS 1: 5-8 = end day,hr,min,sec
>> AIPS 1: ANTENNAS *all 0 Antennas to copy 0=>all
>> AIPS 1: BASELINE *all 0 Baselines with ANTENNAS
>> AIPS 1: SUBARRAY 0 Limit copy to one subarray
>> AIPS 1: 0 => all.
>> AIPS 1: FLAGVER 1 FG table to apply to data
>> AIPS 1: <= 0 => do not apply
>> AIPS 1: UVCOPPRM 0 0 Flags:
>> AIPS 1: 1 *rest 0 1 > 0 => keep flagged data
>> AIPS 1: 2 > 0 => drop subarray info
>> AIPS 1: 3 = 0 => copy xc and ac data
>> AIPS 1: = 1 => copy only xc data
>> AIPS 1: = 2 => copy only ac data
>> AIPS 1: of antennas, named in
>> AIPS 1: antenna list. Baseline
>> AIPS 1: list must be zero.
>> AIPS 1: 4 > 0 => report progress
>> AIPS 1: 5 => flag data with weights
>> AIPS 1: below this limit
>> AIPS 1: 6 = 1,3 -> do NOT flag TY/SY
>> AIPS 1: = 2,3 -> do NOT flag SN
>> AIPS 1: 7 = extend copy of tables
>> AIPS 1: by UVCO(7) min, 0 -> 15
>> AIPS 1: NCOUNT 0 If UVCOPPRM(3) = 2 then
>> AIPS 1: ** press RETURN for more, enter Q or next line to quit print **
>> #
>> AIPS 1: NCOUNT is the approximate
>> AIPS 1: ratio of AC to XC in file.
>> > go
>> AIPS 1: Resumes
>> AIPS 1: RETURN CODE 2 RECEIVED: STOPPING
>> > pcat
>> AIPS 1: Catalog on disk 1
>> AIPS 1: Cat Usid Mapname Class Seq Pt Last access Stat
>> AIPS 1: 1 999 10-25 .UVEVLA. 1 UV 19-NOV-2013 08:32:28
>
-------------- next part --------------
echidna LISTR(31DEC13) 999 19-NOV-2013 07:19:01 Page 1
File = 10-25 .UVEVLA. 1 Vol = 1 Userid = 999
Freq = 1.000000000 GHz Ncor = 4 No. vis = 0
Scan summary listing
Scan Source Qual Calcode Sub Timerange FrqID START VIS END VIS
Source summary
Velocity type = ' ' Definition = ' '
ID Source Qual Calcode RA(2000.0) Dec(2000.0) IFlux QFlux UFlux VFlux No. vis
1 J0943-0819 : 0000 09:43:36.9444 -08:19:30.812 0.000 0.000 0.000 0.000 0
IF( 2) 0.000 0.000 0.000 0.000
IF( 3) 0.000 0.000 0.000 0.000
IF( 4) 0.000 0.000 0.000 0.000
2 J0943-0819 : 0000 D 09:43:36.9444 -08:19:30.812 0.000 0.000 0.000 0.000 0
IF( 2) 0.000 0.000 0.000 0.000
IF( 3) 0.000 0.000 0.000 0.000
IF( 4) 0.000 0.000 0.000 0.000
3 deepfield : 0000 10:01:24.0000 02:20:60.000 0.000 0.000 0.000 0.000 0
IF( 2) 0.000 0.000 0.000 0.000
IF( 3) 0.000 0.000 0.000 0.000
IF( 4) 0.000 0.000 0.000 0.000
4 1331+305=3C286 : 0000 K 13:31:08.2880 30:30:32.959 0.000 0.000 0.000 0.000 0
IF( 2) 0.000 0.000 0.000 0.000
IF( 3) 0.000 0.000 0.000 0.000
IF( 4) 0.000 0.000 0.000 0.000
ID Source Freq(GHz) Velocity(Km/s) Rest freq (GHz)
1 All Sources 1.0000 0.0000 0.0000
IF( 2) 1.3840 0.0000 0.0000
IF( 3) 1.6400 0.0000 0.0000
IF( 4) 1.7680 0.0000 0.0000
Frequency Table summary
FQID IF# Freq(GHz) BW(kHz) Ch.Sep(kHz) Sideband Bandcode
1 1 1.00000000 128000.0078 2000.0001 1
2 1.38400000 128000.0078 2000.0001 1
3 1.64000000 128000.0078 2000.0001 1
4 1.76800000 128000.0078 2000.0001 1
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