loi_Ic QUALITY Bits

The following data quality bits are defined specifically for the MDI loi proxy continuum intensity observable loi_Ic:

MDI loi_Ic QUALITY Bits
Bit Meaning Comments Fraction Affected
0 - 15, 31 Standard QUALITY Bits
16 Startup Transient Thermal transients in the MDI filter oven during the first 3 or 4 hours after each "structure program" restart cause a shift in velocity and intensity observables. These intervals have been manually marked to avoid use of this data. TBD ?
17-18Unused
19 Uncorrected Flat Field On-board flat-fielding performed with non-standard table and data not corrected for known errors. TBD ?
20 No Flat Field No on-board flat-fielding performed; binned and integrated data may be flat-fielded later. TBD ?
21 Corrupt Flat Field On-board flat-fielding performed with corrupted table; correction requires after-the-fact determination of on-board flat-field values at the time. TBD ?
22 I0 Filtergram Error On-board processing error resulting in corruption of computed continuum values only. Generally only part of an image affected. TBD ?
23-29Unused
30 Manual Rejection Manual inspection rejection of data. Reasons may include reasons that either are or could be indicated by other trouble bits. TBD ?
31 Problem Valid?

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Author RSB; Last modified by JTH on 5 May, 1998