[evlatests] L-Band Flagging

[Rick Perley]

    I'm pleased to report that the 'stress test' has shown that all the 
erroneous flagging issues identified over the past few days at L-band 
have been correctly resolved.  All antennas -- except 16 -- now show up 
correctly in the flagged data. 
    Antenna 16 is being heavily flagged by the system, but I think 
incorrectly so.  Loading the unflagged data shows that the amplitudes 
and phases are fine (except for 16B, which has some special stability 
problem).  The nature of this flagging is quite unlike that which 
removed antennas 6, 7, 15 and 22 over the weekend.  A different problem. 

    A number of antennas (both VLA and EVLA) are not quite fully settled 
down when the unflagged data begin to appear.  The preceding scan was at 
X-band.  When the dust settles, we will surely need to carefully review 
what is causing some antennas to take so long to settle down, following 
the change from any other band to L-band.