[daip] SPLIT problem
Takayuki HAYASHI
t.hayashi at nao.ac.jp
Tue Jul 6 01:55:15 EDT 2010
Thank you for your advise.
I checked my data by UVPLT with "DOCAL 1" and there are the data which
include MK.
So, my CL or SN tables are correct.
Then I tried to check BP table by POSSM with "aparm(8) 1" and found
there are no data for LHCP of MK.
Moreover, when I tried to SPLIT the data with "DOBAN -1" it worked well.
So, there are no problem with SPLIT and I suspect BPASS doesn't work well.
Could you give me more advise about BPASS to calibrate LHCP of MK ?
My BPASS parameters are below.
CL table 6 include calibration for baseline which include LHCP of MK
withou fail.
======
AIPS 1: BPASS Task to generate a "Bandpass" (BP) table.
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME '$PROJECT$' 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 1 Input UV file disk unit #
AIPS 1:
AIPS 1: Data Selection
AIPS 1: CALSOUR 'J0854+2006' Bandpass calibrator sources.
AIPS 1: 'DA193' *rest ' '
AIPS 1: QUAL -1 Calibrator qualifier -1=>all
AIPS 1: CALCODE ' ' Calibrator code ' '=>all
AIPS 1: UVRANG 0 0 UV range to select
AIPS 1: TIMERANG *all 0 Time range to select
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: BIF 0 Lowest IF number 0=>all
AIPS 1: EIF 0 Highest IF number 0=>all
AIPS 1: SUBARRAY 0 Subarray, 0=>all
AIPS 1: ANTENNAS *all 0 Antennas to select
AIPS 1:
AIPS 1: CLEAN map (optional)
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: 'SUBI' (see HELP re images)
AIPS 1: SMODEL *all 0 Source model, 1=flux,2=x,3=y
AIPS 1: See HELP SMODEL for details.
AIPS 1:
AIPS 1: Control options
AIPS 1: DOCALIB 1 > 0 calibrate data & weights
AIPS 1: > 99 do NOT calibrate weights
AIPS 1: GAINUSE 6 CL table to apply (SN table
AIPS 1: to apply to single-source)
AIPS 1: DOPOL -1 If >0 correct polarization.
AIPS 1: BLVER -1 BL table to apply.
AIPS 1: FLAGVER 0 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: SOLINT -1 Solution interval (mins)
AIPS 1: -1 => do whole time range
AIPS 1: SOLTYPE 'L1R' Soln type,' ','L1','GCON',
AIPS 1: 'R', 'L1R', 'GCOR'
AIPS 1: REFANT 9 Reference antenna
AIPS 1: OUTVERS 2 Output BP table version
AIPS 1: 0 => a new table to be
AIPS 1: generated.
AIPS 1: SMOOTH *all 0 Smoothing function.
AIPS 1: BE VERY CAREFUL HERE.
AIPS 1: ANTWT *all 0 Ant. wts (0 => 1.)
AIPS 1: WEIGHTIT 0 Modify data weights function
AIPS 1: MINAMPER 0 Amplitude closure error
AIPS 1: regarded as excessive in %
AIPS 1: MINPHSER 0 Phase closure error regarded
AIPS 1: as excessive in degrees
AIPS 1: BPASSPRM 0 0 Control information:
AIPS 1: 0 0 1: if > 0 use only the
AIPS 1: 0 0 autocorrelation data.
AIPS 1: 0 0 2: print level - see help
AIPS 1: 0 1 3: If > 0 do not divide data
AIPS 1: 0 by source model
AIPS 1: 4: If > 0 store phases only
AIPS 1: in the BP table. If < 0
AIPS 1: store amplitudes only.
AIPS 1: 5: Divide by 'channel 0'
AIPS 1: **** CHANGED MAY 2010 ****
AIPS 1: 6: amp closure error limit -
AIPS 1: print channels averaging
AIPS 1: over this if (2) > 0
AIPS 1: 7: phase closure error limit
AIPS 1: print channels averaging
AIPS 1: over this if (2) > 0
AIPS 1: 8: > 0 => scalar average
AIPS 1: 9: > 0 => interpolate over
AIPS 1: flagged channels if poss.
AIPS 1: 10:1 => normalize amplitudes
AIPS 1: using all channels
AIPS 1: 2 => normalize amplitudes
AIPS 1: using ICHANSEL channels
AIPS 1: 3 => normalize amplitudes
AIPS 1: and zero average phase
AIPS 1: using ICHANSEL channels
AIPS 1: 4 => normalize amplitudes
AIPS 1: and zero average phase
AIPS 1: using all channels
AIPS 1: 0 => no deliberate norm.
AIPS 1: 11: > 0 solution weights are
AIPS 1: independent of channel
AIPS 1: = -1 weights scaled
AIPS 1: by amplitude**2
AIPS 1: < -1.5 weights scaled by
AIPS 1: 1 / amplitude**2
AIPS 1: ICHANSEL *all 0 Array of start and stop chan
AIPS 1: numbers, plus a channel
AIPS 1: increment and IF to be used
AIPS 1: to select channels to sum to
AIPS 1: find a 'channel 0'. If all
AIPS 1: 0, range set to inner 75% of
AIPS 1: observing band.
AIPS 1: SPECINDX 0 Spectral index to correct
AIPS 1: 'Channel 0' uv-data
AIPS 1: IN3NAME ' ' Channel 0 uv name (name)
AIPS 1: must be '' to suppress option
AIPS 1: IN3CLASS ' ' Channel 0 uv name (class)
AIPS 1: must be '' to suppress option
AIPS 1: IN3SEQ 0 Channel 0 uv name (seq. #)
AIPS 1: IN3DISK 0 Channel 0 uv disk unit #
AIPS 1: BADDISK *all 0 Disks to avoid for scratch
2010/7/5 Eric Greisen <egreisen at nrao.edu>:
> Takayuki HAYASHI wrote:
>>
>> Dear DAIP,
>>
>> Now, I'm analysing the VLBA data in which RHCP of MK have some problems.
>> So, there are following data.
>>
>> LL and LR which includes MK
>> LL, RR, RL, LR (FULL stokes) which doesn't includes MK
>>
>> I tried to SPLIT the data and FITTP to make UVFITS
>> so that make image by Difmap.
>> However, it seems that SPLIT uses the data which both RR and LL are
>> included and all the data of MK are removed.
>> (Until I SPLIT the data there are stokes LR and LL of MK baseline without
>> fail.)
>>
>> Could you tell me how to include stokes LL and RL data of MK ?
>
> I just tried this on some vlba data I happened to have and it worked as
> expected. Is it possible that you do not have L calibration for MK?
>
> Try UVPLT or UVPRT with DOCAL true (as in SPLIT) to see if any MK data
> appear.
>
> Eric Greisen
>
--
=================================================
Takayuki Hayashi t.hayashi at nao.ac.jp
Department of Astronomy
School of Science, The University of Tokyo
http://rinsan-t.net/
=================================================
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