[evlatests] More troubles with Referenced Pointing

[Rick Perley]

     I've looked at the referenced pointing data from my 17B-053 science 
run, taken Friday morning.

     Two significant issues have been identified:

     1) New-ACU antennas are being incompletely flagged when moving from 
one position to another.

     2) All antennas have overshoots and oscillations, which are not 
flagged. For some new-ACU antennas and some positions, these 
oscillations last longer than the 20 seconds allotted to each position.  
(The period of these is about 10 seconds -- far from the resonant period 
of the antennas themselves).

     Note that these erroneous data -- because they are not flagged -- 
are being utilized for the pointing solutions.  In most cases, the 
effects are not especially large.  But I think we can, and should, do 
better.

     My suggestion is to utilize only the last 10 -- 12 seconds of each 
position, regardless of the flags.

     Because 'a picture is worth 1000 words', I've attached a 
three-slide pdf, showing some of the data.

     Hichem and Vivek are looking into these issues.


     Rick

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