Data Quality Reports for Session: 180857 User: mpekour Completed: 10/28/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D130413.5PVC/AOS/S1 - Missing datapvcaosuhsasS1.a1Missing
D141210.4PVC/UHSAS/S1 - Problem with time fieldspvcaosuhsasS1.a1Incorrect


DQRID : D130413.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/09/2013001802/13/20131955Missing
10/05/2012164510/08/20121353Missing
11/09/2012155711/13/20121915Missing
Subject:
PVC/AOS/S1 - Missing data
DataStreams:pvcaosuhsasS1.a1
Description:
Data are missing and unrecoverable.
Measurements:pvcaosuhsasS1.a1:
  • unit_temperature
  • base_time
  • auxiliary
  • current
  • MET air temperature(temperature)
  • East longitude(lon)
  • flow
  • differential_voltage
  • reference
  • scattering_voltage
  • sampling_volume
  • bin_num
  • upper_size_limit
  • sample_pressure
  • sheath_flow
  • Altitude above mean sea level(alt)
  • lower_size_limit
  • purge_flow
  • North latitude(lat)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • time_offset
  • time

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DQRID : D141210.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/27/2012203703/28/20131900Incorrect
Subject:
PVC/UHSAS/S1 - Problem with time fields
DataStreams:pvcaosuhsasS1.a1
Description:
During the deployment the instrument time for the UHSAS was not automatically synched and 
tended to drift fast relative to the time corrected by a time server. The time of the 
data in the files is about 20 to 220 seconds fast. This has been determined by comparing the 
time of spikes in UHSAS CPC data. 

The  Documents show the time of the peaks used to approximate the 
error in the time. About 2 peaks a week were chosen to compare.
Measurements:pvcaosuhsasS1.a1:
  • unit_temperature
  • base_time
  • auxiliary
  • MET air temperature(temperature)
  • current
  • flow
  • differential_voltage
  • reference
  • scattering_voltage
  • sampling_volume
  • bin_num
  • upper_size_limit
  • sample_pressure
  • sheath_flow
  • lower_size_limit
  • purge_flow
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • time_offset
  • time

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