Data Quality Report for Order ID: 187305
User ID: eluke    Date completed: 2017-08-18
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D050103.1 NSA/MMCR/C1 - Coherent Up/Down Coverter Off nsammcrmomC1.b1 Incorrect
D060803.1 NSA/MMCR/C1 - Sensitivity Loss, Calibration Wrong nsammcrmomC1.b1 Incorrect
 
DQR ID: D050103.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-12-29 02:00:00 2005-01-03 22:50:00 Incorrect
Subject: NSA/MMCR/C1 - Coherent Up/Down Coverter Off
Affected Datastreams: nsammcrmomC1.b1
Description The Coherent Up/Down Converter was inadvertently turned off during this period.
Measurements
  • alt (Altitude)
  • CalCheckTime (Receiver Cal Check Time Stamp)
  • ReceiverMode (Receiver Mode)
  • lat (Latitude)
  • Reflectivity (Reflectivity)
  • SkyNoiseLevel (Receiver Sky Noise)
  • Heights (Range Heights (center of radar sample volume))
  • time_offset (Time offset from base_time)
  • RangeCorrectedPower (Range Corrected Calibrated Power)
  • NumSpectralAverages (Number of Spectral Averages)
  • base_time (Base time in Epoch)
  • WindowingONOFF (Windowing ON-OFF Status)
  • MinimumDetectableReflectivity (Minimum detectable reflectivity)
  • NoiseLevel (Mean Noise Level)
  • Rx290KLevel (Receiver 290K Level)
  • NyquistVelocity (Nyquist Velocity)
  • PulseWidth (Pulse Width)
  • DataQualityStatus (Data Quality Status)
  • Power (Power (uncalibrated))
  • NumCoherentIntegrations (Number of Coherent Integrations)
  • ModeNum (Operating Set for this Record)
  • ReceiverNumber (Current Receiver Number)
  • ModeDescription (radar mode char identifier)
  • AvgNoiseLevel (Average Noise Level (S/N<0))
  • MeanDopplerVelocity (Mean Doppler Velocity)
  • Azimuth (Azimuth)
  • NumReceivers (Number of Receiver)
  • RadarConstant (Radar Constant)
  • InterPulsePeriod (Inter-Pulse Period)
  • SignalToNoiseRatio (Signal to Noise Ratio)
  • RxGain (Receiver Gain)
  • GateSpacing (Gate Spacing)
  • ClutterHeight (Max. height of clutter removal)
  • CalibrationConstant (First Order Estimate of Spectral Count Calibration)
  • RxCalTimeStamp (Receiver Cal Time Stamp)
  • Spectra (Spectra Dat)
  • Elevation (Elevation)
  • DCFilterONOFF (DC Filtering ON-OFF Status)
  • NumCodeBits (Number of Code Bits)
  • NumHeights (Number of Range Gates)
  • CircularDepolarizationRatio (Circular Depolarization Ratio)
  • NumFFT (Number of Points in FFT)
  • SpectralWidth (Spectral Width)
  • CalCheckLevel (Receiver Cal Check Level)
  • lon (Longitude)
  • StartGateDelay (Delay to First Range Gate)
 
DQR ID: D060803.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-08-01 00:00:00 2007-02-01 23:59:00 Incorrect
Subject: NSA/MMCR/C1 - Sensitivity Loss, Calibration Wrong
Affected Datastreams: nsammcrmomC1.b1
Description Jay Mace compared data from CLOUDSAT to the MMCR and found significant discrepancies. It appears that the MMCR has a sensitivity problem and is underreporting reflectivity by ~20 dBZ. A comparison with the MPL shows that this might be a gradual degradation, i.e. there are no apparent shifts identifying when this might have occured.
Measurements
  • alt (Altitude)
  • CalCheckTime (Receiver Cal Check Time Stamp)
  • ReceiverMode (Receiver Mode)
  • lat (Latitude)
  • Reflectivity (Reflectivity)
  • SkyNoiseLevel (Receiver Sky Noise)
  • Heights (Range Heights (center of radar sample volume))
  • time_offset (Time offset from base_time)
  • RangeCorrectedPower (Range Corrected Calibrated Power)
  • NumSpectralAverages (Number of Spectral Averages)
  • WindowingONOFF (Windowing ON-OFF Status)
  • MinimumDetectableReflectivity (Minimum detectable reflectivity)
  • base_time (Base time in Epoch)
  • NoiseLevel (Mean Noise Level)
  • NyquistVelocity (Nyquist Velocity)
  • Rx290KLevel (Receiver 290K Level)
  • PulseWidth (Pulse Width)
  • DataQualityStatus (Data Quality Status)
  • Power (Power (uncalibrated))
  • NumCoherentIntegrations (Number of Coherent Integrations)
  • ReceiverNumber (Current Receiver Number)
  • ModeNum (Operating Set for this Record)
  • ModeDescription (radar mode char identifier)
  • MeanDopplerVelocity (Mean Doppler Velocity)
  • AvgNoiseLevel (Average Noise Level (S/N<0))
  • Azimuth (Azimuth)
  • NumReceivers (Number of Receiver)
  • RadarConstant (Radar Constant)
  • InterPulsePeriod (Inter-Pulse Period)
  • SignalToNoiseRatio (Signal to Noise Ratio)
  • RxGain (Receiver Gain)
  • GateSpacing (Gate Spacing)
  • ClutterHeight (Max. height of clutter removal)
  • CalibrationConstant (First Order Estimate of Spectral Count Calibration)
  • RxCalTimeStamp (Receiver Cal Time Stamp)
  • Spectra (Spectra Dat)
  • Elevation (Elevation)
  • NumFFT (Number of Points in FFT)
  • NumCodeBits (Number of Code Bits)
  • DCFilterONOFF (DC Filtering ON-OFF Status)
  • NumHeights (Number of Range Gates)
  • CircularDepolarizationRatio (Circular Depolarization Ratio)
  • SpectralWidth (Spectral Width)
  • CalCheckLevel (Receiver Cal Check Level)
  • lon (Longitude)
  • StartGateDelay (Delay to First Range Gate)