DQR ID | Subject | Data Streams Affected |
---|---|---|
D080828.1 | HFE/MWR/M1 - Insufficient calibration stability | hfemwrlosM1.b1, hfemwrtipM1.a1 |
D090203.2 | HFE/MWRHF/M1 - 150-GHz data drop out | hfemwrhfM1.b1 |
D090213.3 | HFE/MWRHF/M1 - Calibration updates | hfemwrhfM1.b1 |
D090310.2 | HFE/MWRHF/M1 - Elevated noise in 150 GHz data | hfemwrhfM1.b1 |
D090311.3 | HFE/MWR/M1 - Missing data | hfemwrlosM1.b1, hfemwrtipM1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2008 | 0000 | 09/26/2008 | 2359 |
10/01/2008 | 0000 | 10/06/2008 | 1500 |
10/16/2008 | 0201 | 10/16/2008 | 2359 |
10/20/2008 | 0000 | 10/23/2008 | 2359 |
Subject: | HFE/MWR/M1 - Insufficient calibration stability |
DataStreams: | hfemwrlosM1.b1, hfemwrtipM1.a1 |
Description: | The noise diode temperature suddenly jumped to > 60 C after a power outage. Following additional power problems the noise diode injection temperature drifted fast and the radiometer was not able to calibrate properly. Data during the indicated time periods are poorly calibrated and sometimes erratic. Users should be aware that the accuracy of the measurements is dramatically degraded. Users can use the microwave profiler (MWRP) data to supplement the MWR data. |
Measurements: | hfemwrlosM1.b1:
hfemwrtipM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/04/2008 | 1229 | 10/02/2008 | 2340 |
Subject: | HFE/MWRHF/M1 - 150-GHz data drop out |
DataStreams: | hfemwrhfM1.b1 |
Description: | The sky brightness temperature at 150 GHz (tbsky150) dropped to zero at 12:29 GMT on 20080804 and stayed flat lined until 23:40 GMT on 20081002. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2008 | 0500 | 12/28/2008 | 2359 |
Subject: | HFE/MWRHF/M1 - Calibration updates |
DataStreams: | hfemwrhfM1.b1 |
Description: | The MWRHF calibration algorithm updates the calibration parameters every time a new successful tip curve is acquired. This results in small jumps (1-2 K) in the brightness temperatures each time calibration is updated. During times of frequent calibrations the data appear discontinuous with short data segments interrupted by small jumps. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/2008 | 2341 | 12/28/2008 | 2359 |
Subject: | HFE/MWRHF/M1 - Elevated noise in 150 GHz data |
DataStreams: | hfemwrhfM1.b1 |
Description: | The noise level of the 150 GHz channel was about 4 times higher than expected, likely due to failure of the noise diode. Disregard the 150 GHz data. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/06/2008 | 1501 | 10/16/2008 | 0200 |
10/17/2008 | 0000 | 10/19/2008 | 2359 |
10/24/2008 | 0000 | 10/26/2008 | 2359 |
11/09/2008 | 0000 | 12/28/2008 | 0000 |
Subject: | HFE/MWR/M1 - Missing data |
DataStreams: | hfemwrlosM1.b1, hfemwrtipM1.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | hfemwrlosM1.b1:
hfemwrtipM1.a1:
|