Data Quality Report for Order ID: 187581
User ID: mmaahn    Date completed: 2017-09-06
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D140611.17 NSA/MPLCMASK/C1 - Reprocessing Notice (RID 1137) nsa30smplcmask1zwangC1.c1 Note
D170802.4 NSA/MPLCMASK/C1 - Reprocess: Instrument correction error nsa30smplcmask1zwangC1.c1 Suspect
 
DQR ID: D140611.17    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-09-29 00:00:00 2014-06-06 23:59:00 Note
Subject: NSA/MPLCMASK/C1 - Reprocessing Notice (RID 1137)
Affected Datastreams: nsa30smplcmask1zwangC1.c1
Description See below for details of reprocessing that was completed on 20140807. Original DQR category: 4 (Red, Incorrect). ----------------------------------------------------------- Linear depolarization ratio calculation is incorrect in the VAP processing code.
Measurements
  • linear_depol_ratio (Linear depolarization ratio)
 
DQR ID: D170802.4    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2010-10-07 00:00:00 2017-07-25 23:59:59 Suspect
Subject: NSA/MPLCMASK/C1 - Reprocess: Instrument correction error
Affected Datastreams: nsa30smplcmask1zwangC1.c1
Description Overlap and dead-time instrument corrections in the 30smplcmask1zwang VAP were not applied in the correct order. As a result, very high backscatter signals near 500 m can sometimes exceed the acceptable maximum signal for applying a dead-time correction. Regions, where the dead-time correction is not applied, appear as an artificial band or artifact. Cloud detection is not impacted by this issue.
Measurements
  • backscatter_snr (Signal to noise ratio of backscatter)
  • linear_depol_ratio (Linear depolarization ratio)
  • linear_depol_snr (Signal to noise ratio for the linear depolarization ratio)
  • backscatter (Total attenuated backscatter)