[daip] different bug in POSSM
Leonia Kogan
lkogan at aoc.nrao.edu
Wed Aug 28 12:50:25 EDT 2002
Privet Deniska,
>I indicated: POSSM will not show any plots
>if stokes = 'lr' (stokes 'rl' works fine).
I tried POSSM with your data at my unix mashine.
It works!! for both STOKES='LR' and 'RL'
I doubt the result will be different for linux.
I used the following input parameters:
Leonia
AIPS 1: POSSM Task to plot total and cross-power spectra.
AIPS 1: Adverbs Values Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: USERID 0 User number
AIPS 1: INNAME 'GABUZDA ' Input UV file name (name)
AIPS 1: INCLASS 'POSSM ' Input UV file name (class)
AIPS 1: INSEQ 1 Input UV file name (seq. #)
AIPS 1: INDISK 2 Input UV file disk unit #
AIPS 1: SOURCES *all ' ' Source list
AIPS 1: QUAL -1 Source 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: UVRANG 0 0 UV range to be plotted
AIPS 1: TIMERANG 0 21 Time range to be plotted
AIPS 1: 55 0 21 57
AIPS 1: 0 0
AIPS 1: STOKES 'LR ' Stokes type(s) to select.
AIPS 1: BIF 1 Lowest IF number 0=>all
AIPS 1: EIF 1 Highest IF number 0=>all
AIPS 1: BCHAN 0 Lowest channel number 0=>all
AIPS 1: ECHAN 0 Highest channel number 0=>all
AIPS 1: SUBARRAY 0 Subarray, 0=>1
AIPS 1: ANTENNAS 1 *rest 0 Antennas to select
AIPS 1: BASELINE 8 *rest 0 Baselines with ANTENNAS
AIPS 1: DOCALIB -1 If >0 calibrate data
AIPS 1: = 2 calibrate weights
AIPS 1: GAINUSE 2 CL (or SN) table to apply
AIPS 1: DOPOL -1 If >0 correct polarization.
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: SMOOTH *all 0 Smoothing function. See
AIPS 1: HELP SMOOTH for details.
AIPS 1: SHIFT 0 0 Position shift:
AIPS 1: RA, Dec (arcsec)
AIPS 1: 0 => no shift
AIPS 1: APARM *all 0 Control information:
AIPS 1: 1: = 0 => scalar average
AIPS 1: > 0 => vector average
AIPS 1: 2: = 0 => self-scale
AIPS 1: > 0 => fixed scale
AIPS 1: (use APARM(3-6))
AIPS 1: 3: min. amplitude
AIPS 1: 4: max. amplitude
AIPS 1: 5: min. phase (degrees)
AIPS 1: 6: max. phase
AIPS 1: 7: x-axis labelling
AIPS 1: = 0 = > in channels.
AIPS 1: = 1 = > in Hz (or secs
AIPS 1: if corr. fn)
AIPS 1: = 2 = > in m/s
AIPS 1: 8: = 0 => plot cross power
AIPS 1: = 1 => plot total power
AIPS 1: = 2 => plot BP table
AIPS 1: = 3 => plot ACF
AIPS 1: = 4 => plot XCF
AIPS 1: = 5 => plot cross power of
AIPS 1: individual antennas
AIPS 1: for cross polaris.
AIPS 1: (STOKES=RL, or LR)
AIPS 1: 9: > 0 => plot several IF's
AIPS 1: and/or polarizations
AIPS 1: together as though one
AIPS 1: long spectrum (see HELP)
AIPS 1: 10: > 0 => reverse direction
AIPS 1: of plotted spectrum, so
AIPS 1: velocity increases to
AIPS 1: right.
AIPS 1: CODETYPE ' ' 'A&P ', 'AMP ', 'PHAS',
AIPS 1: 'R&I ', 'REAL', 'IMAG'
AIPS 1: other => 'A&P '
AIPS 1: POLPLOT ' ' Option to display various
AIPS 1: combinations of polzns to
AIPS 1: plot: 'RL/RR', 'RL/LL',
AIPS 1: 'LR/RR', 'LR/LL', 'RR/LL'
AIPS 1: 'LL/RR'; other = don't use
AIPS 1: this option.
AIPS 1: SOLINT 0 If SOLINT > 0 then it enables
AIPS 1: the user to make multiple
AIPS 1: plots per pass of POSSM.
AIPS 1: It defines the averaging time
AIPS 1: for each individual plot.
AIPS 1: Task will start at TIMERANG
AIPS 1: and make a plot for every
AIPS 1: SOLINT minutes. If SOLINT
AIPS 1: = -1 will do the same but
AIPS 1: will do scan averages if NX
AIPS 1: table is present.
AIPS 1: NPLOTS 1 Number of plots per page
AIPS 1: BPARM *all 0 More control information:
AIPS 1: 1: If = 1 divide by 'channel
AIPS 1: 0' before plotting data.
AIPS 1: 0 => do not divide.
AIPS 1: 2: Start chn. of 'channel 0'
AIPS 1: (0 => determined by POSSM)
AIPS 1: 3: Stop chn. of 'channel 0'
AIPS 1: (0 => determined by POSSM)
AIPS 1: 4: ignore spectrum when ampl.
AIPS 1: channel 0 < BPARM(4) Jy
AIPS 1: 5-9: unused
AIPS 1: 10: =1 => don't write header
AIPS 1: info when writing to outfile
AIPS 1: useful for appending several
AIPS 1: spectra into a single outfile
AIPS 1: [see EXPLAIN POSSM]
AIPS 1: OUTFILE ' '
AIPS 1: Filename in which to write
AIPS 1: spectrum. Default = ' ' =
AIPS 1: do not write spectrum. The
AIPS 1: file is written only if
AIPS 1: NPLOTS = 0
AIPS 1: LTYPE 3 Type of labeling: 1 border,
AIPS 1: 2 no ticks, 3 - 6 standard,
AIPS 1: 7 - 10 only tick labels
AIPS 1: <0 -> no date/time
AIPS 1: BADDISK *all 0 Disks to avoid for scratch
AIPS 1: DOTV -1 > 0 Do plot on the TV, else
AIPS 1: make a plot file
AIPS 1: GRCHAN 2 Graphics channel 0 => 1.
>
----- Begin Included Message -----
>From gabuzda at caesar.ucc.ie Wed Aug 28 05:27 MDT 2002
Date: Wed, 28 Aug 2002 12:28:40 -0400 (EDT)
From: Denise Gabuzda <gabuzda at caesar.ucc.ie>
X-X-Sender: <gabuzda at nerva.ucc.ie>
To: <lkogan at cv3.cv.nrao.edu>
Subject: different bug in POSSM
MIME-Version: 1.0
X-Lines: 17
Status: RO
Privet Leonia!
It looks like we were able to finish calibrating our data
by just deleting the CQ table -- hopefully this will not
affect the amplitudes too much.
While you have the short piece of data there, maybe you
can check out another bug in POSSM. We have had this problem
with every dataset we have tried to reduce with the version
of AIPS and linux I indicated: POSSM will not show any plots
if stokes = 'lr' (stokes 'rl' works fine).
Schastlivo,
Denise
----- End Included Message -----
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