Data Quality Reports for Session: 107883 User: kjohnson Completed: 09/20/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050718.1TWP/MPL/C1 - energy monitor spikestwpmplC1.00, twpmplC1.a1
D060225.1TWP/MPL/C1 - Energy monitor values are erroneoustwpmplC1.00, twpmplC1.a1


DQRID : D050718.1
Start DateStart TimeEnd DateEnd Time
05/01/2005000007/16/20052300
Subject:
TWP/MPL/C1 - energy monitor spikes
DataStreams:twpmplC1.00, twpmplC1.a1
Description:
The energy monitor spiked to abnormal values, from 2 up to 25 microjoules per pulse. At 
the beginning, it was only a few intermittent spikes, but the spikes became more frequent. 
Most of June does not show a spiky energy monitor. On June 28-30, July 1-10 a diurnal 
pattern shows up. On July 12-13 it abruptly goes away and returns July 14-16 for 24hrs. Then 
abruptly stops again 17-19. Except for the 12th, the last changes occurred at 00:00 UTC 
suggesting a piece of equipment is turning on and off. I do not know why a noisy energy 
monitor would have a day/night or 00:00UTC dependence.
Measurements:twpmplC1.a1:
  • Laser output energy per pulse(energy_monitor)

twpmplC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D060225.1
Start DateStart TimeEnd DateEnd Time
11/11/2005120002/25/20062300
Subject:
TWP/MPL/C1 - Energy monitor values are erroneous
DataStreams:twpmplC1.00, twpmplC1.a1
Description:
Energy monitor values should not be used to normalization the backscatter profiles. A 
problem with the energy monitor electronics forced the value to maximum. The problem was 
corrected.
Measurements:twpmplC1.a1:
  • Laser output energy per pulse(energy_monitor)

twpmplC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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