DQR ID | Subject | Data Streams Affected |
---|---|---|
D070529.2 | SGP/IRT/E16 - computer failure | sgpirtE16.b1, sgpirt200msE16.a1 |
D071031.3 | SGP/IRT/E15 - Power supply failed | sgpirtE15.b1, sgpirt200msE15.a1 |
D071217.6 | SGP/IRT/E15 - Instrument noise problem | sgpirtE15.00, sgpirtE15.b1, sgpirt200msE15.a1 |
D080424.3 | SGP/IRT/E16 - reference temperature incorrect | sgpirtE16.b1, sgpirt200msE16.a1 |
D080904.2 | SGP/IRT/E15 - Communication problem | sgpirt200msE15.a1 |
D091215.2 | SGP/IRT/E16 - Response time | sgpirtE16.b1, sgpirt200msE16.a1 |
D091216.6 | SGP/IRT/E15 - Response time | sgpirtE15.b1, sgpirt200msE15.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2006 | 0600 | 04/11/2007 | 1559 |
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:
sgpirt200msE16.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2007 | 1430 | 09/26/2007 | 1704 |
10/10/2007 | 1604 | 10/23/2007 | 1704 |
10/31/2007 | 1704 | 11/06/2007 | 2104 |
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:
sgpirt200msE15.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/12/2005 | 1530 | 03/28/2008 | 1722 |
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:
sgpirt200msE15.a1:
sgpirtE15.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/2007 | 1600 | 06/19/2008 | 2035 |
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:
sgpirt200msE16.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/2008 | 1300 | 09/26/2008 | 1326 |
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 03/29/2006 | 2359 |
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:
sgpirt200msE16.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/27/2005 | 0000 | 07/12/2005 | 1529 |
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:
sgpirt200msE15.a1:
|