Data Quality Reports for Session: 123630 User: delta Completed: 10/13/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020620.42SGP/MFR25M/C1 - Loose connectionssgpmfr25mC1.a0, sgpmfr25mC1.b1
D090226.8SGP/MFR25M/C1 - Missing datasgpmfr25mC1.a0, sgpmfr25mC1.b1
D960914.18SGP/MFR25M/C1 - Intermittent small time stamp errorsgpmfr25mC1.a0, sgpmfr25mC1.b1
D961010.1SGP/MFR25M/C1 - poor data qualitysgpmfr25mC1.a0, sgpmfr25mC1.b1


DQRID : D020620.42
Start DateStart TimeEnd DateEnd Time
03/24/2002090804/11/20022202
Subject:
SGP/MFR25M/C1 - Loose connections
DataStreams:sgpmfr25mC1.a0, sgpmfr25mC1.b1
Description:
No solar data after 03/24/2002 and no head temp data after 03/25/2002. Connections were 
reseated on 04/02/2002, but the data still looked bad.  More maintenance occurred on 
04/11/2002, when a reseating and tightening of the connections was performed.
Measurements:sgpmfr25mC1.b1:
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • Data Logger Supply Voltage(logger_volt)
  • Time offset of tweaks from base_time(time_offset)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • lat(lat)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • lon(lon)
  • Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • Dummy altitude for Zeb(alt)
  • Detector Temperature(head_temp)
  • base time(base_time)
sgpmfr25mC1.a0:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • lat(lat)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • Data Logger Supply Voltage(logger_volt)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • Detector Temperature(head_temp)
  • lon(lon)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • Time offset of tweaks from base_time(time_offset)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

Back To Table of Contents

DQRID : D090226.8
Start DateStart TimeEnd DateEnd Time
09/03/1994142009/06/19941223
10/08/1994232010/10/19940225
12/20/1994223112/29/19941634
05/23/1995163105/26/19951634
11/18/1995013011/20/19950232
11/22/1995233111/24/19951715
11/25/1995043111/27/19950931
12/06/1995133112/10/19951653
02/28/1996203003/01/19961531
03/02/1996023203/04/19960450
04/05/1996033204/08/19962010
09/30/1996193210/08/19962033
11/16/1996153211/18/19961533
02/28/1997113103/03/19971933
08/12/1997151008/14/19971932
10/12/1997031010/15/19971416
11/01/1997011111/03/19972212
01/04/1998090901/07/19982115
01/11/1998201101/14/19981712
02/04/1998191202/06/19982212
05/01/1998181105/04/19981611
10/31/1998111411/03/19981313
12/25/1998211512/28/19982015
01/02/1999111401/04/19991506
03/13/1999212303/16/19990325
10/18/2000141411/09/20002316
08/18/2001000208/20/20011602
01/30/2002180202/19/20021702
03/09/2002200203/12/20020702
02/13/2004170202/20/20041525
07/02/2004230207/06/20041502
12/22/2007180812/24/20070211
02/04/2009160902/12/20091709
Subject:
SGP/MFR25M/C1 - Missing data
DataStreams:sgpmfr25mC1.a0, sgpmfr25mC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpmfr25mC1.b1:
  • time(time)
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • Data Logger Supply Voltage(logger_volt)
  • Time offset of tweaks from base_time(time_offset)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • lat(lat)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • lon(lon)
  • Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • Dummy altitude for Zeb(alt)
  • Detector Temperature(head_temp)
  • base time(base_time)
sgpmfr25mC1.a0:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • lat(lat)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • time(time)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • Data Logger Supply Voltage(logger_volt)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • Detector Temperature(head_temp)
  • lon(lon)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • Time offset of tweaks from base_time(time_offset)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

Back To Table of Contents

DQRID : D960914.18
Start DateStart TimeEnd DateEnd Time
03/23/1994000003/27/19962359
Subject:
SGP/MFR25M/C1 - Intermittent small time stamp error
DataStreams:sgpmfr25mC1.a0, sgpmfr25mC1.b1
Description:
The internal code that runs the MFR data logger had a bug that occasionally caused the 
time stamp associated with the data to be slightly in error.  This error is thought to be 
very small (say less than 30 seconds) and very infrequent.  (Unfortunately, we cannot give 
firm estimates of the magnitude and frequency of the error).

Also, the upwelling MFR measurements were contaminated by electrical noise originating 
from the heater contained in the sensor head.  During the time the sensor head was polled by 
the data logger, the heater would strobe "on and off", and the noise caused by this 
strobing could greatly contaminate the data.  Some of the data is so contaminated that it is 
virtually useless.   

After 96/03/27 these problems were corrected.  Those who use the data before this time 
should realize that the time stamp for each record of data might be slightly in error, and 
the data could be very noisy due to the heater switching on and off.
Measurements:sgpmfr25mC1.b1:
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • Time offset of tweaks from base_time(time_offset)
  • Data Logger Supply Voltage(logger_volt)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • Detector Temperature(head_temp)
  • base time(base_time)
sgpmfr25mC1.a0:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • Data Logger Supply Voltage(logger_volt)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • base time(base_time)
  • Detector Temperature(head_temp)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • Time offset of tweaks from base_time(time_offset)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

Back To Table of Contents

DQRID : D961010.1
Start DateStart TimeEnd DateEnd Time
08/22/1996000010/08/19961900
Subject:
SGP/MFR25M/C1 - poor data quality
DataStreams:sgpmfr25mC1.a0, sgpmfr25mC1.b1
Description:
In the middle of August, the logger board that collects data from the 25m MFR was 
upgraded.  This upgrade did not work out as planned, and the data quality from the MFR are not 
good.  The poor data is easily identifiable - you'll know it when you see it.  After 
19961008, a new logger board was installed that solved the problem. 

Note: the exact date when these problems started is not known with precision; it could be 
several days prior to or after 960822.
Measurements:sgpmfr25mC1.b1:
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
sgpmfr25mC1.a0:
  • Fields flagged by callang: 0 = No Flag\n,(callang_flags)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

Back To Table of Contents


END OF DATA