[daip] [Fwd: BB255CB and CD]

[Eric Greisen]

Data Analysts wrote:
> 
> 
> ------------------------------------------------------------------------
> 
> Subject:
> BB255CB and CD
> From:
> Andreas Brunthaler <brunthal at mpifr-bonn.mpg.de>
> Date:
> Tue, 05 May 2009 15:50:48 +0200
> To:
> Data Analysts <analysts at nrao.edu>
> 
> To:
> Data Analysts <analysts at nrao.edu>
> 
> 
> Dear Analysts,
> 
> I have downloaded the data from BB255CB and CD today from  the archive
> (the 16 channel pass). When I try to load the two datasets with fitld
> and doconcat 1 I get the following error:
> 
> PC2004> FITLD1: Task FITLD  (release of 31DEC09) begins
> PC2004> FITLD1: MISMATCH           6           2  AXIS COUNT
> PC2004> FITLD1: ERROR      1 RETURNED FROM UVFHDR
> PC2004> FITLD1: Purports to die of UNNATURAL causes
> PC2004> FITLD1: pc20045      31DEC09 TST: Cpu=       0.0  Real=       0
> 
> The headers are almost identical:
> 
> AIPS 1: Image=MULTI     (UV)         Filename=BB255C      .FXPOL .   1
> AIPS 1: Telescope=VLBA               Receiver=
> AIPS 1: Observer=BB255               User #=  255
> AIPS 1: Observ. date=08-APR-2009     Map date=05-MAY-2009
> AIPS 1: # visibilities   1046761     Sort order  TB
> AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  BASELINE
> AIPS 1:            SOURCE  FREQSEL  INTTIM  GATEID  CORR-ID
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
> AIPS 1: COMPLEX      3   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
> AIPS 1: FREQ        16   2.2197040E+10       0.53  5.0000000E+05    0.00
> AIPS 1: IF           4   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: RA           1    00 00 00.000       1.00       0.000000    0.00
> AIPS 1: DEC          1    00 00 00.000       1.00       0.000000    0.00
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Coordinate equinox 2000.00
> 
> 
> and
> 
> AIPS 1: Image=MULTI     (UV)         Filename=BB255C      .FXPOL .   2
> AIPS 1: Telescope=VLBA               Receiver=
> AIPS 1: Observer=BB255               User #=  255
> AIPS 1: Observ. date=09-APR-2009     Map date=05-MAY-2009
> AIPS 1: # visibilities    970096     Sort order  TB
> AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  BASELINE
> AIPS 1:            SOURCE  FREQSEL  INTTIM  GATEID  CORR-ID
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
> AIPS 1: COMPLEX      3   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
> AIPS 1: FREQ        16   2.2197040E+10       0.53  5.0000000E+05    0.00
> AIPS 1: IF           4   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: RA           1    00 00 00.000       1.00       0.000000    0.00
> AIPS 1: DEC          1    00 00 00.000       1.00       0.000000    0.00
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Coordinate equinox 2000.00
> 
> Do you have any idea why I get this error?
> 
> Cheers,
> Andreas
> 
> 
> 
> ------------------------------------------------------------------------
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This is a bizarre looking error - the number of axes being 2 would apply 
to some simple images perhaps although aips normally makes more axes 
than that.  There was a bug in FITLD that I fixed in 31DEC09 on April 10 
which conceivably could be behind this problem although the testing that 
I did showed other issues mostly not serious.  Try bringing your version 
up to date and re-running FITLD.

Eric Greisen