[daip] elevation flagging in UVFLG
Leonia Kogan
lkogan at nrao.edu
Mon Jul 16 18:30:27 EDT 2007
Lynn,
I think I found the problem.
Please, run UVFLG with subarray=1
Tell me please what did you get?
LK
Lynn D. Matthews wrote:
> I've tried out the new elevation flagging in UVFLG, but I can't seem to
> get it to flag anything. I'm trying it on a compressed, multi-source VLBA
> data set where I've verified that I have data in the elevation
> ranges I'm trying to flag. Perhaps I have some input set incorrectly? I
> always get the message:
>
> RGLINU> UVFLG1: Task UVFLG (release of 31DEC07) begins
> RGLINU> UVFLG1:
> RGLINU> UVFLG1: Nothing was added to FG table 4
> RGLINU> UVFLG1: Appears to have ended successfully
>
> Sample inputs are as follows:
>
> AIPS 1: UVFLG: Task to Flag selected UV data on disk.
> AIPS 1: Adverbs Values Comments
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: INNAME 'BG118K' UV data (name).
> AIPS 1: INCLASS 'FITLD' UV data (class).
> AIPS 1: INSEQ 2 UV data (seq. #). 0 => high
> AIPS 1: INDISK 3 Disk unit #. 0 => any
> AIPS 1: INFILE *all ' ' Text file name.
> AIPS 1: SOURCES '0458-020' Sources selected/deselected
> AIPS 1: *rest ' '
> AIPS 1: SUBARRAY 0 Subarray number 0=>all.
> AIPS 1: SELBAND -1 Bandwidth to flag (kHz)
> AIPS 1: SELFREQ -1 Frequency to flag (MHz)
> AIPS 1: FREQID -1 Freq. ID to flag. -1=>all.
> AIPS 1: 0=> first Freq. ID.
> AIPS 1: TIMERANG *all 0 Time: start day,hr,min,sec
> AIPS 1: stop day,hr,min,sec.
> AIPS 1: BCHAN 0 First frequency channel
> AIPS 1: ECHAN 0 Last channel 0=>all
> AIPS 1: BIF 0 First IF 0=>1
> AIPS 1: EIF 0 Last IF 0=>all
> AIPS 1: ANTENNAS *all 0 Antennas
> AIPS 1: BASELINE *all 0 Baselines with ANTENNAS
> AIPS 1: STOKES ' ' Stokes' parameters
> AIPS 1: FLAGVER 99 Flag table version number
> AIPS 1: Used w single-source too
> AIPS 1: APARM 0 0 Clip on ampl. and weight
> AIPS 1: 0 -10 (single source data only)
> AIPS 1: 10 *rest 0 1:lower limit of amplitude
> AIPS 1: 2:upper limit of amplitude
> AIPS 1: 0 => use defaults
> AIPS 1: sign is significant!
> AIPS 1: 3:limit of weight
> AIPS 1: The data with ampl. outside
> AIPS 1: of a given range or weight
> AIPS 1: less the given value are
> AIPS 1: flagged (unflagged)
> AIPS 1: Elevation flagging
> AIPS 1: 4:elevation lower cutoff deg
> AIPS 1: 5:elevation upper cutoff deg
> AIPS 1: 6:Factor of suppression of
> AIPS 1: spurious fringes caused by
> AIPS 1: pulse cal when fringe
> AIPS 1: rate close to zero.
> AIPS 1: It must be >1
> AIPS 1: 0 => do not flag due to
> AIPS 1: this reason
> AIPS 1: 7:>0 => Print source, time,
> AIPS 1: baseline, U,V of expected
> AIPS 1: zero fringe rate (U=0)
> AIPS 1: 0 => do not print
> AIPS 1: APARM=0 => flagging(unflag.)
> AIPS 1: does not depend on APARM
> AIPS 1: OPCODE 'FLAG' 'FLAG','UFLG'
> AIPS 1: REASON 'LOW EL' Reason (24 char.)
> AIPS 1: BDROP 0 First vis. no. to flag
> AIPS 1: (not with flag tables)
> AIPS 1: EDROP 0 Last vis. no. to flag
> AIPS 1: (not with flag tables)
> AIPS 1: DOHIST 1 > 0 -> add to history
>
> Lynn Matthews
>
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