Caltech     IPAC           JPL           NASA

KI V2 Data Products

Quality assessment (.qa) FileDescription

QA files are ASCIItext files that contain the summary quality assessment metrics for the wide-band, summed spectrometer and individual spectrometer channels for the L-1 V2 data for KI. The following gives an example of a line from a KI QA file:

QA 01/01/2004/08:44:24 8.740074 HDC27406 1.2 KI_K1K2 6 WB 78 49 58 64 spec 83 48

58 74 1 79 34 56 89 2 45 35 47 40 3 67 5980 79 4 59 52 58 63

The line consistsof a number of space-delimited fields. The meanings of these fieldsare summarized in the table below. Each line corresponds to a blockaverage of data (typically from 5 to 25 seconds of fringe data, notnecessarily contiguous). A value of NULL indicatesthat the quantity was not calculated. Note that the grade calculationis not yet implemented. See the QAoverview for details on the QA calculations. A # as the leadingcharacter indicates a comment.

field# content comments
QA a literal string; each line starts with QA.
date UTC date of the observation (dd/mm/yyyy/hh:mm:ss)
time Mean observation time (decimal UTC hours)
target Target designation (ASCII string)
context version CVS version of context file
baseline Baseline name
Num. of bands Number of bands of QA data (wideband, summed spectrometer and individual spectrometerchannels
Band ID ID for this band. Allowed values are WB, spec and integers for the individual spectrometerchannels
Grade Overall grade for this band.
Record percentile Record-context percentile score for this band.
Scan percentile Scan-context percentile score for this band.
Night percentile Night-context percentile score for this band.
Band, grade, record, scan, night Columns 8 through 12 repeated for each band.