[daip] ANTAB and GC tables

[Amy Mioduszewski]

Hi Matt,

So sorry, I figured out the problem and then immediately forgot about it for a 
week.  The problem was in VLOG, which had hardwired frequency ranges.  I have 
widened them to the maximum allowed by the VLBA receivers.  I have tested it on 
your data and it now works properly.  Should be in the midnight job tonight.

Amy

On 02/09/2015 09:55 AM, Matt Lister wrote:
> Hi Amy, thanks for looking into this.  The GC.TSYS file was created with VLOG  -
> all I did was use the standard vlba_gains.key file
> as the 'calin' file.   So Eric might need to take a look at VLOG as well, or the
> standard vlba_gains.key file on the NRAO web site needs
> to be edited.
>
> -  Matt
>
> On 02/09/2015 11:35 AM, Amy Mioduszewski wrote:
>> Hi Matt,
>>
>> Eric figured out what the problem is, which turns out to be an error in the
>> GC.TSYS file you used not in ANTAB or APCAL. Although in looking at this Eric
>> has decided to reduce the number of default dimensions for a GC table read in
>> from a file and he did find a bug that would only effect you if you had more
>> than 45 IFs.
>>
>> Anyway, the problem with the GC.TSYS FREQ range is too small for your
>> frequency range and IFs 6-8 are not contained in this range. If you increase
>> the range (or put a different GAIN entry for higher than 15400) then
>> ANTAB/APCAL will work.
>>
>> Amy
>>
>> On 02/07/2015 06:44 AM, Matt Lister wrote:
>>> We want to be able to do this for older segments of BL193 as well. In our
>>> investigation
>>> into the overall VLBA flux calibration, we want to use the same GC table for all
>>> segments.
>>>
>>> - Matt
>>>
>>> On 2/6/2015 5:50 PM, Amy Mioduszewski wrote:
>>>> Just out of curiosity, why are you loading in the GC table from a text file?
>>>> The numbers are identical the the ones in the existing table 1.
>>>>
>>>> Amy
>>>>
>>>> On 02/05/2015 06:24 PM, Matt Lister wrote:
>>>>> Yes, that's the one.
>>>>>
>>>>> On 2/5/2015 6:41 PM, Amy Mioduszewski wrote:
>>>>>> Hi Matt,
>>>>>>
>>>>>> So there are the same number of "rows" in each table (i.e., one for each
>>>>>> antenna) but the dimension of the fields is 1600 for the new table and 10 for
>>>>>> the old.  Trying to figure out why this happened.  I thought I could do it
>>>>>> all
>>>>>> with the tables, but ANTAB wants the NX table which is not in your TASAV
>>>>>> and I
>>>>>> cannot make a new one without the data.  So I am going to download the data.
>>>>>>
>>>>>> I looked in the archive and am going to download the full dataset:
>>>>>> VLBA_BL193AQ_bl193aq_BIN0_SRC0_0_150202T145833.idifit, is this the one you
>>>>>> are
>>>>>> using?
>>>>>>
>>>>>> Amy
>>>>>>
>>>>>> On 02/05/2015 08:24 AM, Matt Lister wrote:
>>>>>>> Hi Amy, you can find the files at
>>>>>>> http://www.physics.purdue.edu/~mlister/BL193AQ
>>>>>>>
>>>>>>>
>>>>>>> On 02/04/2015 03:59 PM, Amy Mioduszewski wrote:
>>>>>>>> Hi Matt,
>>>>>>>>
>>>>>>>> What you describe is very odd.  I think I need your data to see what is
>>>>>>>> actually happening.  Could you do a tasav and put the file somewhere I can
>>>>>>>> get
>>>>>>>> it?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>>
>>>>>>>> Amy
>>>>>>>>
>>>>>>>> On 02/03/2015 03:02 PM, Matt Lister wrote:
>>>>>>>>> Hi Eric,
>>>>>>>>>
>>>>>>>>> I've got a post-Feb 2014 VLBA data set (BL193AQ) in which I would like to
>>>>>>>>> delete
>>>>>>>>> the GC table that comes with the archive
>>>>>>>>> data and replace it with values from the latest vlba_gains.key file.  I
>>>>>>>>> don't
>>>>>>>>> want to alter the existing TY table.
>>>>>>>>>
>>>>>>>>> I've run VLOG on the vlba_gains.key file, to create the attached file.
>>>>>>>>>
>>>>>>>>> When I run ANTAB,  the resulting GC table doesn't work with APCAL. It is
>>>>>>>>> also
>>>>>>>>> 16000 lines long, whereas
>>>>>>>>> the original GC table was only 600.
>>>>>>>>>
>>>>>>>>> Do you know what is going on here with ANTAB (31DEC14) ? Is there any
>>>>>>>>> other
>>>>>>>>> way
>>>>>>>>> to load in a gain table for
>>>>>>>>> a RDBE era data set?
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>> Matt
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Daip mailing list
>>>>>>>>> Daip at listmgr.nrao.edu
>>>>>>>>> https://listmgr.nrao.edu/mailman/listinfo/daip
>>>>>>>>>
>>>>>>>
>>>>>
>>>
>