Data Quality Reports for Session: 121354 User: dmfoper Completed: 08/06/2009


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070105.2NSA/MPL/C1 - Detector FailurensamplpolC1.b1
D070122.1NSA/MPL/C1 - Missing datansamplpolC1.b1


DQRID : D070105.2
Start DateStart TimeEnd DateEnd Time
12/22/2006120001/03/20071900
Subject:
NSA/MPL/C1 - Detector Failure
DataStreams:nsamplpolC1.b1
Description:
Beginning 12/25, the signal return displayed serious aliasing, reflection, or ringing of 
the detector, with a highly repetitive pattern repeating six or more times within the 
lowest 15 km.  On 01/02, the detector became very difficult to put into any type of operating 
condition. When it did operate, the "aliased" signal pattern was still present.

The detector was replaced.
Measurements:nsamplpolC1.b1:
  • Laser Temperature(laser_temp)
  • Laser output energy per pulse(energy_monitor)
  • Background signal standard deviation(background_signal_std)
  • Attenuated backscatter(signal_return)
  • Background Signal(background_signal)


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DQRID : D070122.1
Start DateStart TimeEnd DateEnd Time
01/03/2007190001/12/20070130
Subject:
NSA/MPL/C1 - Missing data
DataStreams:nsamplpolC1.b1
Description:
System was down for detector replacement.
Measurements:nsamplpolC1.b1:
  • Preliminary cloud base height(preliminary_cbh)
  • base time(base_time)
  • Laser Temperature(laser_temp)
  • Number of detector channels(num_channels)
  • Attenuated backscatter(signal_return)
  • Dummy altitude for Zeb(alt)
  • Background Signal(background_signal)
  • effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
  • Polarization control enabled flag(polarization_control)
  • Array of heights for the range gates(height)
  • time(time)
  • Number of laser pulses summed during averaging interval(shots_per_avg)
  • lat(lat)
  • Time offset of tweaks from base_time(time_offset)
  • Detector Temperature(detector_temp)
  • Number of bins stored in data block(num_bins)
  • range(range)
  • Telescope temperature(scope_temp)
  • Distance from leading edge of first range bin to the center of each bin .(range_bins)
  • Dead time correction flag(dead_time_corrected)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • Polarization control voltage setting(polarization_control_voltage)
  • lon(lon)
  • Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Laser output energy per pulse(energy_monitor)
  • Background signal standard deviation(background_signal_std)


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