[daip] USUBA problem.

[Michael Bietenholz]

USUBA (opty=SCAN) seems to find un-necessary subarray conditions.

The attached test-file, whichs contains autocorrelation data only from
only one antenna - and can therefore not (I think) contain a real
subarray condition. However, if I run USUBA, it wants to make
subarrays.

(The test file is part of a larger VLBI data set, in which there
shouldn't be any subarraying.  I just want to make sure there wasn't
any inadvertant subarraying as sometimes happens in VLBI, before
further processing).

Should I just ignore USUBA and proceed?

        thanks,    michael b

USUBA wants to start a second subarray here

USUBA1: Source:    J0209+6437           Freq. id:   1
USUBA1: Sub:    1  Start:  0 12  2 15.6777  End:  0 12  3 25.0203
USUBA1: Ant:  1
USUBA1: Source:    3C58PSR              Freq. id:   1
USUBA1: Sub:    2  Start:  0 12  3 25.0152  End:  0 12  6  4.7942
USUBA1: Ant:  1

PRTUV has this to say about that bit

Source= J0209+64      Freq=   1.609724329     Sort= TB           1   RR             1   LL
   Vis #      IAT        Ant  Su Fq U(klam) V(klam) W(klam)   Amp  Phas     Wt   Amp  Phas     Wt
      64  0/12:03:17.48  1- 1  1  0       0       0       0   1.149   0 3.2857   1.293   0 3.2857
      65  0/12:03:20.49  1- 1  1  0       0       0       0   1.151   0 3.2857   1.291   0 3.2857
      66  0/12:03:23.51  1- 1  1  0       0       0       0   1.150   0 3.2857   1.290   0 3.2857
Source= 3C58PSR       Freq=   1.609724329     Sort= TB           1   RR             1   LL
   Vis #      IAT        Ant  Su Fq U(klam) V(klam) W(klam)   Amp  Phas     Wt   Amp  Phas     Wt
      67  0/12:03:26.52  1- 1  1  0       0       0       0   0.137   0 3.2857   0.156   0 3.2857
      68  0/12:03:29.54  1- 1  1  0       0       0       0   0.053   0 3.2857   0.061   0 3.2857
      69  0/12:03:32.55  1- 1  1  0       0       0       0   0.052   0 3.2857   0.060   0 3.2857
      70  0/12:03:35.57  1- 1  1  0       0       0       0   0.053   0 3.2857   0.059   0 3.2857



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