[evlatests] Curious correlator problem

Vivek Dhawan vdhawan at nrao.edu
Thu Dec 22 13:36:21 EST 2022


clearly some bad boards or parts thereof - there are some known issues.

what is the obs SB number, date etc.

On 12/22/22 11:31, Rick Perley via evlatests wrote:
> In my most recent 'lunacy' observation (taken 13 December, at P-band), 
> I have found that a number of correlations, in spectral window 5 only, 
> are not present in the data.  Presumably were 'pure zero' 
> correlations, and removed in the download.
>
> For the following baselines, all four correlations are absent, for the 
> entire observation -- but only in SPW05.  All other spectral windows 
> are complete.
>
> ea04 x ea 08 through 21.
>
> ea 17 x ea17, 10, and 22
>
> ea 21 x ea06 and 11
>
> ea27 x ea05, 13 and 19
>
> ea23 x ea26.
>
> Is there an explanation?
>
> Rick
>
>
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