[daip] PCAL bug

[Eric Greisen]

Jared Crossley wrote:
> Eric,
> 
> I've run into a possible PCAL bug.  In version 31DEC10 and 31DEC11, if I 
> set Sources to an array of more than 20 strings, PCAL fails with the 
> message below.  By using <= 20 sources, I avoid the bug.  The confusing 
> thing is that PCAL prints an error about the source list being too long 
> and then follows that message with output that suggests it is ignoring 
> the extra sources and using only the first 20.
> 
> Jared Crossley
> 
> 
> PCAL 1: Task PCAL   (release of 31DEC10) begins
> PCAL 1: Doing no flagging this time
> PCAL 1: PCLSOU: ERROR: TOO MANY CALIBRATORS, >  20
> PCAL 1: Solved for spectral indices - will use:
> PCAL 1: Num  Name                I        Q        U        V
> PCAL 1:   1  0133+476           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   2  0224+671           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   3  0716+714           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   4  1502+106           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   5  1510-089           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   6  1652+398           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   7  1758+388           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   8  1958-179           0.0000   0.0000   0.0000   0.0000
> PCAL 1:   9  2155-152           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  10  2005+403           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  11  2200+420           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  12  2251+158           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  13  2351+456           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  14  0149+218           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  15  0430+289           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  16  0414-189           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  17  0430+052           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  18  0954+658           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  19  0805-077           0.0000   0.0000   0.0000   0.0000
> PCAL 1:  20  0829+046           0.0000   0.0000   0.0000   0.0000
> PCAL 1: Processing IF number  1
>    0.0000
> PCAL 1: ZCLOSE: LUN = 27 FIND VALUES  281 2157 DISAGREE
> PCAL 1: ZOPEN: LUN = 27 ALREADY OPENED IN FTAB
> PCAL 1: PCLSEL: ZOPEN ERROR   1 OPENING SCRATCH FILE
> PCAL 1: Purports to die of UNNATURAL causes
> PCAL 1: cv-pipe- 31DEC10 NEW: Cpu=      0.7  Real=      1  IO=        73
> 

I have changed the number of allowed cal sources from 20 to 50.  CALSOUR 
is limited to 30 but CALCODE and things could make for even more.  The 
original authors of PCAL apparently felt no one would have so many 
polarization calibration sources...

The fix will appear in 31DEC11 in tomorrow's MNJ.

Eric Greisen