[daip] question regarding VBGLU

[Amy Mioduszewski]

Dear Chengyu,

What did you do the the data before you VBGLUed them?

Amy

Cheng-Yu Kuo wrote:
>           Dear VLBI experts in AIPS helpdesk:
> 
>         My name is Chengyu Kuo, a UV graduate student. I have a question 
> about AIPS again!
> Part of my VLBA observation is to observe many geodetic calibrators to 
> determine the zenith
> atmosphere delays and clock errors. For one of my geodetic datasets, I 
> have problems to
> do VGBLU properly.
> 
>         The program ID for this dataset is BB242H. There are two freqids 
> for the geodetic observation,
> and I need to VBGLU  the two freqids to stick all 8 IF bands together. 
> However, for some unknown
> reasons, VBGLU cannot stick them properly. The AIPS message is attached 
> at the end of this email.
> I also attach the jpec image of what I see by using EDITA to view the TY 
> table with this email. There are many data that have zero system 
> temperature. However, if I do this for each freqid separately, there is 
> no such a problem.
> 
>         In addition, this problem seem to affect the calibration 
> process. I cannot do instrumental
> delay calibration properly. There are big phase offsets between the two 
> freqids for GBT for the geodetic blocks affected by the mis-match after 
> VBGLU. I did not see this problem in my other datasets. Could you help 
> me to take a look of this problem. Thank you for your time!
> 
> regards
> chengyu
>  
> chimp.> VBGLU3: Task VBGLU  (release of 31DEC06) begins
> chimp.> VBGLU3: Create GEODET0419  .VBGLU .   5 (UV)  on disk  5  cno    3
> chimp.> VBGLU3: File GEODET0419  .UVCOP . 124 on disk   5 covers
> chimp.> VBGLU3: time range   0/ 13 39  3 -   0/ 14 20  5 and has    
> 45087 vis
> chimp.> VBGLU3: File GEODET0419  .UVCOP . 528 on disk   5 covers
> chimp.> VBGLU3: time range   0/ 13 39  3 -   0/ 14 20  5 and has    
> 45045 vis
> chimp.> VBGLU3: Wrote      154 visibilities with data merged in from 1 
> files
> chimp.> VBGLU3: Wrote    44989 visibilities with data merged in from 2 
> files
> chimp.> VBGLU3: Operation required       1 I/O re-initializations
> chimp.> VBGLU3: Copied OB file from vol/cno/vers  5    1   1 to  5    3   1
> chimp.> VBGLU3: Copied AN file from vol/cno/vers  5    1   1 to  5    3   1
> chimp.> VBGLU3: Copied FG file from vol/cno/vers  5    1   1 to  5    3   1
> chimp.> VBGLU3: Copied WX file from vol/cno/vers  5    1   1 to  5    3   1
> chimp.> VBGLU3: Copied NX file from vol/cno/vers  5    1   1 to  5    3   1
> chimp.> VBGLU3: GLUTAB TABLE: AT MISSING REQUIRED COLUMNS, FILE 1
> chimp.> VBGLU3: IM table copied:    462 rows containing data from 1 
> input files
> chimp.> VBGLU3: IM table copied:    110 rows containing data from 2 
> input files
> chimp.> VBGLU3:     THIS SUGGESTS THAT THESE IM TABLES WERE NOT WELL 
> MATCHED
> chimp.> VBGLU3: CL table copied:   3980 rows containing data from 1 
> input files
> chimp.> VBGLU3: CL table copied:   1258 rows containing data from 2 
> input files
> chimp.> VBGLU3:     THIS SUGGESTS THAT THESE CL TABLES WERE NOT WELL 
> MATCHED
> chimp.> VBGLU3: MC table copied:   1302 rows containing data from 1 
> input files
> chimp.> VBGLU3: MC table copied:    311 rows containing data from 2 
> input files
> chimp.> VBGLU3:     THIS SUGGESTS THAT THESE MC TABLES WERE NOT WELL 
> MATCHED
> chimp.> VBGLU3: TY table copied:    980 rows containing data from 1 
> input files
> chimp.> VBGLU3: TY table copied:    280 rows containing data from 2 
> input files
> chimp.> VBGLU3:     THIS SUGGESTS THAT THESE TY TABLES WERE NOT WELL 
> MATCHED
> chimp.> VBGLU3: PC table copied:    542 rows containing data from 1 
> input files
> chimp.> VBGLU3: PC table copied:    109 rows containing data from 2 
> input files
> chimp.> VBGLU3:     THIS SUGGESTS THAT THESE PC TABLES WERE NOT WELL 
> MATCHED
> chimp.> VBGLU3: SU table copied:      2 rows containing data from 1 
> input files
> chimp.> VBGLU3: SU table copied:     28 rows containing data from 2 
> input files
> chimp.> VBGLU3: GC table copied:     32 rows containing data from 2 
> input files
> chimp.> VBGLU3: CQ table copied:      1 rows containing data from 2 
> input files
> chimp.> VBGLU3: CT table col. TRANGE1 not the same in row   6 in files 1 
> and 2
> chimp.> VBGLU3: ******************************************************
> chimp.> VBGLU3: ** CT tables are not identical, will not copy to    **
> chimp.> VBGLU3: ** output dataset.  See EXPLAIN file for more info. **
> chimp.> VBGLU3: ******************************************************
> chimp.> VBGLU3: GLUTAB: CT tables not copied
> chimp.> VBGLU3: Run INDXR to create a new index (NX) table for the 
> output file
> chimp.> VBGLU3: Appears to have ended successfully
> 
> 
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