DQR ID | Subject | Data Streams Affected |
---|---|---|
D090213.1 | HFE/SKYRAD/M1 - IRT bias | hfeskyrad60sM1.b1 |
D090213.3 | HFE/MWRHF/M1 - Calibration updates | hfemwrhfM1.b1 |
D090310.2 | HFE/MWRHF/M1 - Elevated noise in 150 GHz data | hfemwrhfM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/16/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/SKYRAD/M1 - IRT bias |
DataStreams: | hfeskyrad60sM1.b1 |
Description: | The sky temperatures exhibited a positive bias compared to AERI, especially when < 230K. This is indicative of an incorrect emissivity setting (to compensate for the gold mirror) or a poor calibration. A similar problem with the same instrument occurred during the FKB deployment that was attributed to water vapor. |
Measurements: | hfeskyrad60sM1.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:
|