Data Quality Reports for Session: 131161 User: dmfoper Completed: 10/28/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D101022.3SGP/QCRAD/C1/E10/E11/E12/E13/E15/E16/E19/E20/E21/E4/E6/E7/E9 -sgpqcrad1longC1.c1, sgpqcrad1longE4.c1, sgpqcrad1longE6.c1, sgpqcrad1longE7.c1,
sgpqcrad1longE9.c1, sgpqcrad1longE10.c1, sgpqcrad1longE11.c1, sgpqcrad1longE12.c1,
sgpqcrad1longE13.c1, sgpqcrad1longE15.c1, sgpqcrad1longE16.c1, sgpqcrad1longE19.c1,
sgpqcrad1longE20.c1, sgpqcrad1longE21.c1, sgpqcradbrs1longC1.c1, sgpqcradbeflux1longC1.c1


DQRID : D101022.3
Start DateStart TimeEnd DateEnd Time
09/11/1999000006/07/20102359
Subject:
SGP/QCRAD/C1/E10/E11/E12/E13/E15/E16/E19/E20/E21/E4/E6/E7/E9  -
DataStreams:sgpqcrad1longC1.c1, sgpqcrad1longE4.c1, sgpqcrad1longE6.c1, sgpqcrad1longE7.c1,
sgpqcrad1longE9.c1, sgpqcrad1longE10.c1, sgpqcrad1longE11.c1, sgpqcrad1longE12.c1,
sgpqcrad1longE13.c1, sgpqcrad1longE15.c1, sgpqcrad1longE16.c1, sgpqcrad1longE19.c1,
sgpqcrad1longE20.c1, sgpqcrad1longE21.c1, sgpqcradbrs1longC1.c1, sgpqcradbeflux1longC1.c1
Description:
In the qc_down_short_diffuse_hemisp field, QC failures from the test indicated by bit_13, 
"data failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75 
and SumSW > 50; GSW/SumSW < 0.85 or GSW/SumSW > 1.15)".  Solar tracker failures are 
correctly indicated in the aqc_down_short_diffuse_hemisp field. 

In the qc_short_direct_normal field, QC failures from the test indicated by bit_10, "data 
failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75 and 
SumSW > 50; GSW/ SumSW < 0.85 or GSW/SumSW > 1.15)".  Solar tracker failures are correctly 
indicated in the aqc_short_direct_normal field. 

This is a software problem in the VAP that impacts all dates for which a solar tracker 
failure occurred prior to 20100608 for each facility.  The 19990911 start date was chosen 
because the DQR system can not link multiple start/end date/times with multiple facilities 
within the same report.  As a result, the latest start date corresponding to E21 was 
chosen. The actual start dates for which this problem could have occurred for each facility 
are as follows:

E4:  19950508
E6:  19960305
E7:  19950518
E9:  19940112
E10:  19950721
E11:  19950630
E12:  19960119
E13:  19940107
E15:  19940112
E16:  19950602
E19:  19980708
E20:  19941103
E21:  19990911
C1, qcrad1long:  19970321
C1, qcradbeflux1long:  19950519
C1, qcradbrs1long:  19930901

Please note that if a solar tracker failure is not indicated by the 
aqc_down_short_diffuse_hemisp and/or aqc_short_direct_normal fields you can ignore this DQR.
Measurements:sgpqcrad1longE6.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcradbeflux1longC1.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcrad1longE12.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE20.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcrad1longE7.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcradbrs1longC1.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcrad1longE13.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcrad1longE15.c1:
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE10.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
sgpqcrad1longE21.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE4.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE9.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE11.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE19.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longC1.c1:
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
sgpqcrad1longE16.c1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

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