[daip] AIPS error help

[Eric Greisen]

R Athreya wrote:
> 
> Dear Dr. Greisen
> 
> While running UVSUB I got the following error - could you please let me 
> know what it means ... and the reference to a compilation of help on 
> error messages, if such a thing exists.
> 
> On another note, I noticed a lot of bird pictures on your web page. 
> Perhaps you may find the following link interesting
> http://www.indianbirds.in/pdfs/A%20new%20species%20of%20Liocichla%20(Aves%20Timaliidae)%20from%20Eaglenest%20Wildlife%20Sanctuary.pdf 
> 
> 
> Thanks
> 
> -----------------------------------------------------------------------
> ERROR MESSAGE
> 
> UVSUB1: ALGSTB: All   147 Rows In AP (Max    267)
> UVSUB1: ALGSTB field   43 Ipol gridded model subtraction chns    1-   93
> UVSUB1: ALGSTB: Pass   1;  136-   0 Cells, with  7782532 Pts
> UVSUB1: GRDCRM: BAD CELL(      1) =     0.216     0.893
> UVSUB1: GRDCRM: BAD CELL(      2) =     0.907    -4.281
> UVSUB1: GRDCRM: BAD CELL(      3) =     8.212     0.292
> UVSUB1: GRDCRM: BAD CELL(      4) =     3.315    -0.815
> UVSUB1: GRDCRM: BAD CELL(      6) =    59.526    82.325
> UVSUB1: GRDCRM: BAD CELL(      7) =     4.000    -4.268
> UVSUB1: GRDCRM: BAD CELL(      8) =    -2.525    -1.394
> UVSUB1: UVPROT: Maximum input   U Baseline is  1.214E+04 lambda
> UVSUB1: UVPROT: Maximum rotated U Baseline is  1.215E+04 lambda
> UVSUB1: ALGSTB: All   147 Rows In AP (Max    267)
> UVSUB1: ALGSTB field   44 Ipol gridded model subtraction chns    1-   93
> UVSUB1: ALGSTB: Pass   1;  136-   0 Cells, with  7782532 Pts
> UVSUB1: GRDCRM: BAD CELL(      1) =    -0.207     0.104
> UVSUB1: GRDCRM: BAD CELL(      2) =    -1.997   -10.820
> UVSUB1: GRDCRM: BAD CELL(      3) =    -0.130    -7.831
> UVSUB1: GRDCRM: BAD CELL(      4) =    42.734   -41.961
> UVSUB1: GRDCRM: BAD CELL(      5) =    -0.223    -3.447
> UVSUB1: GRDCRM: BAD CELL(      6) =    -3.663     0.588
> UVSUB1: UVPROT: Maximum input   U Baseline is  1.214E+04 lambda
> UVSUB1: UVPROT: Maximum rotated U Baseline is  1.215E+04 lambda
> -----------------------------------------------------------------------

I do not know where you got your model which you are using for this 
UVSUB.  The message means that the Clean Components are not exactly on 
cells - each of the two numbers listed should be integers.  A DFT method 
modeling should not care, but a gridded modeling requires components 
that are on integer cells for the present facet.

Eric Greisen