[evlatests] Mislabeled scan?

Rick Perley rperley at nrao.edu
Wed Apr 16 11:12:17 EDT 2008


    We're continuing tests on the sensitivity problem seen in spectral 
line modes. 

    The latest test involves x-band observations, in various modes.  
Each mode is observed on a calibrator, then on a blank field, at X-band. 

    In data taken this morning, for mode PA with 12.5 MHz BW, the 'blank 
field' observation has only a single record.  The missing data are found 
in the following mode -- PB with 12.5 MHz BW, at the same frequency.  
This might be a mislabeled scan, or a mistaken command by the 
correlator.  Can somebody check this out? 

    The IAT time for the mode PA data is 14:05:28 through 14:11:12. 
    The IAT time for the mode PB data is 14:11:18 through 14:17:12. 

    The apparently mislabelled scan runs from 14:08:35 through 14:11:12. 

    Thanks!

    Rick



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