[daip] Data skipped during FRING

[Arnaud Collioud]

Hi Amy,

Any chance with the "DATA SKIPPED" message ?
Just for your information, I tried to process another similar experiment (RDV96), and the same problem occurs. So this must not be data-related but rather process-related...

Cheers,
Arnaud

Le 20 nov. 2014 à 09:58, Arnaud Collioud a écrit :

> Hi Amy,
> 
> I prepared a subset of my data from 1/0 0 0 to 1/1 0 0, available here:
> http://epoc008.epoc.u-bordeaux1.fr:8081/owncloud/public.php?service=files&t=4fe19ebd4915d0418f8539a5aca980fb
> 
> It corresponds to the second example I sent you yesterday (message when running Fring on subarray 2).
> You may find background info on the experiment and process here: https://listmgr.nrao.edu/pipermail/daip/2014-September/020628.html
> The only difference is that I ran ANTAB before USUBA/INDXR.
> 
> Cheers,
> Arnaud
> 
> Le 19 nov. 2014 à 22:24, Amy Mioduszewski a écrit :
> 
>> I think I might have to run the debugger on this to figure out what is happening.  Could you UVCOP a small amount of data that shows this problem and put it somewhere I can get it?
>> 
>> Thanks!
>> 
>> Amy
>> 
>> On 11/19/2014 09:04 AM, Arnaud Collioud wrote:
>>> Hi again,
>>> 
>>> I took another example where the message is displayed, which is harder for me to understand :
>>> subarray 2, time= 1/00 11 43, duration= ??, src= ?? (is there a way to display the source name in FRING?)
>>> 
>>> There is no entry in NX1 (file sent previously) for this time. The closest entry for subarray 2 is the one at 1/00 12 15 (duration 2:00 for src 1417+385). As before, I attached the result of UVPRT.
>>> 
>>> Arnaud
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Le 19 nov. 2014 à 14:35, Arnaud Collioud a écrit :
>>> 
>>>> Hi Amy,
>>>> 
>>>> I attached the NX table, as well as, the FRING output message (DATA SKIPPED message appears 39 times).
>>>> I also attached the output of UVPRT for the first message found ; it corresponds to :
>>>> subarray 1, time= 1/02 42 04, duration= 0:44, src= 1741-038.
>>>> I am no expert but UVPRT looks good (no data outside scan boundaries)...
>>>> 
>>>> I will try with another example. I will keep you informed.
>>>> 
>>>> Cheers,
>>>> Arnaud
>>>> 
>>>> <UVPRT_SKIPPED_DATA_EX1><fring_skipped_data.txt><NX1_skipped_data>
>>>> 
>>>> Le 18 nov. 2014 à 23:37, Amy Mioduszewski a écrit :
>>>> 
>>>>> Hi Arnaud,
>>>>> 
>>>>> Can you find the data that was skipped?  I.e., have FRING print the times it is working to figure out what time is being skipped and then us UVPRT to find the visibilities?  I doubt this is a big problem or a lot of data, but it would be interesting to find out if there was data that was not making it into "scans" in the NX table.
>>>>> 
>>>>> Amy
>>>>> 
>>>>> On 11/18/2014 08:58 AM, Arnaud Collioud wrote:
>>>>>> Hi Amy, Hi Eric,
>>>>>> 
>>>>>> I got the following message from AIPS when processing standard X-Band VLBI data:
>>>>>>> FRING1: DATA SKIPPED: APPARENTLY BETWEEN SCANS
>>>>>> 
>>>>>> I tried to delete CL1 and NX1 but the message is still there.
>>>>>> In which case does this message occur?
>>>>>> 
>>>>>> Cheers,
>>>>>> Arnaud
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
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>>>>>> https://listmgr.nrao.edu/mailman/listinfo/daip
>>>>>> 
>>>>> 
>>>> 
>>> 
>> 
>