Data Quality Reports for Session: 135984 User: dmfoper Completed: 07/09/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070529.2SGP/IRT/E16 - computer failuresgpirtE16.b1, sgpirt200msE16.a1
D071031.3SGP/IRT/E15 - Power supply failedsgpirtE15.b1, sgpirt200msE15.a1
D071217.6SGP/IRT/E15 - Instrument noise problemsgpirtE15.00, sgpirtE15.b1, sgpirt200msE15.a1
D080424.3SGP/IRT/E16 - reference temperature incorrectsgpirtE16.b1, sgpirt200msE16.a1
D080904.2SGP/IRT/E15 - Communication problemsgpirt200msE15.a1
D091215.2SGP/IRT/E16 - Response timesgpirtE16.b1, sgpirt200msE16.a1
D091216.6SGP/IRT/E15 - Response timesgpirtE15.b1, sgpirt200msE15.a1


DQRID : D070529.2
Start DateStart TimeEnd DateEnd Time
07/14/2006060004/11/20071559
Subject:
SGP/IRT/E16 - computer failure
DataStreams:sgpirtE16.b1, sgpirt200msE16.a1
Description:
The serial ports of the computer failed so no data were collected. The problem was solved 
when the computer was replaced.
Measurements:sgpirtE16.b1:
  • sky_ir_temp_max
  • alt
  • sky_ir_temp_min
  • time_offset
  • samples_in_average
  • time
  • lon
  • base_time
  • ref_ir_temp_std
  • lat
  • ref_ir_temp
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • sky_ir_temp_std
sgpirt200msE16.a1:
  • base_time
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • time
  • alt
  • ref_ir_temp
  • time_offset
  • lat
  • lon

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DQRID : D071031.3
Start DateStart TimeEnd DateEnd Time
09/01/2007143009/26/20071704
10/10/2007160410/23/20071704
10/31/2007170411/06/20072104
Subject:
SGP/IRT/E15 - Power supply failed
DataStreams:sgpirtE15.b1, sgpirt200msE15.a1
Description:
The IRT data were largely missing due to a failing UPS.  The problem was corrected when 
the UPS was replaced.
Measurements:sgpirtE15.b1:
  • ref_ir_temp
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • lat
  • base_time
  • lon
  • sky_ir_temp_max
  • ref_ir_temp_std
  • sky_ir_temp_std
  • sky_ir_temp_min
  • alt
  • time
  • samples_in_average
  • time_offset
sgpirt200msE15.a1:
  • ref_ir_temp
  • time_offset
  • lat
  • base_time
  • time
  • lon
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • alt

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DQRID : D071217.6
Start DateStart TimeEnd DateEnd Time
07/12/2005153003/28/20081722
Subject:
SGP/IRT/E15 - Instrument noise problem
DataStreams:sgpirtE15.00, sgpirtE15.b1, sgpirt200msE15.a1
Description:
The data was much noisier than other nearby sites (a factor of 4-5 times more). The 
connections and communication and other settings were checked. The IRT was replaced on 
1/29/2008 at 17:37 but the response time was incorrectly set to 0.01 s. This problem was 
corrected when the setting was changed to 0.10 s.
Measurements:sgpirtE15.b1:
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • sky_ir_temp_min
sgpirt200msE15.a1:
  • Temperature, Sky Infra-Red(sky_ir_temp)
sgpirtE15.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)

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DQRID : D080424.3
Start DateStart TimeEnd DateEnd Time
04/11/2007160006/19/20082035
Subject:
SGP/IRT/E16 - reference temperature incorrect
DataStreams:sgpirtE16.b1, sgpirt200msE16.a1
Description:
The internal reference temperature was unrealistically high, ~360K (90C). The ambient 
temperature setting was checked. The problem was corrected by replacing the instrument. The 
sky temperature measurement appears to have been unaffected.
Measurements:sgpirtE16.b1:
  • ref_ir_temp_std
  • ref_ir_temp
sgpirt200msE16.a1:
  • ref_ir_temp

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DQRID : D080904.2
Start DateStart TimeEnd DateEnd Time
08/26/2008130009/26/20081326
Subject:
SGP/IRT/E15 - Communication problem
DataStreams:sgpirt200msE15.a1
Description:
The raw data were truncated multiple times per hour resulting in occasional missing 
values. The remaining data are good. 

The serial cable connection was re-seated.
Measurements:sgpirt200msE15.a1:
  • ref_ir_temp
  • Temperature, Sky Infra-Red(sky_ir_temp)

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DQRID : D091215.2
Start DateStart TimeEnd DateEnd Time
12/01/2005000003/29/20062359
Subject:
SGP/IRT/E16 - Response time
DataStreams:sgpirtE16.b1, sgpirt200msE16.a1
Description:
The time response of the temperature measurement was changed from 1.0 to 0.1 sec to 
accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a 
sky temperature of -50C) and a significant decrease in the signal-to-noise ratio.
Measurements:sgpirtE16.b1:
  • ref_ir_temp_std
  • sky_ir_temp_std
sgpirt200msE16.a1:
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • ref_ir_temp

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DQRID : D091216.6
Start DateStart TimeEnd DateEnd Time
05/27/2005000007/12/20051529
Subject:
SGP/IRT/E15 - Response time
DataStreams:sgpirtE15.b1, sgpirt200msE15.a1
Description:
The time response of the temperature measurement was 1.0 sec instead of 0.1 sec (which it 
should have been to accommodate the 5Hz sample rate).
Measurements:sgpirtE15.b1:
  • ref_ir_temp_std
  • sky_ir_temp_std
sgpirt200msE15.a1:
  • ref_ir_temp
  • Temperature, Sky Infra-Red(sky_ir_temp)

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