DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D090203.2 | HFE/MWRHF/M1 - 150-GHz data drop out | hfemwrhfM1.b1 | Missing |
D090213.2 | HFE/MWRHF/M1 - Frosting/Condensation | hfemwrhfM1.b1 | Incorrect |
D090213.3 | HFE/MWRHF/M1 - Calibration updates | hfemwrhfM1.b1 | Does not affect quality |
D090213.4 | HFE/MWRHF/M1 - Rain sensor failure | hfemwrhfM1.b1 | Incorrect |
D090310.2 | HFE/MWRHF/M1 - Elevated noise in 150 GHz data | hfemwrhfM1.b1 | Incorrect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/04/2008 | 1229 | 10/02/2008 | 2340 | Missing |
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 | Data Quality Metric |
---|---|---|---|---|
08/18/2008 | 0000 | 08/28/2008 | 2359 | Incorrect |
05/09/2008 | 0000 | 06/04/2008 | 0310 | Incorrect |
Subject: | HFE/MWRHF/M1 - Frosting/Condensation |
DataStreams: | hfemwrhfM1.b1 |
Description: | The heater module was installed on 6/4/2008. Before this time there is condensation on the window during night time and early morning. On 8/18 the heater appears to have failed and nighttime condensation re-occurred on the radome during conditions of high humidity. Users can identify the segments affected by observing a smooth steady increase in the brightness temperature (BT). BT values can increase to more than 250 K and then smoothly decrease. The RH during these events is usually above 70%. Users should disregard data affected by condensation. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
05/09/2008 | 0500 | 12/28/2008 | 2359 | Does not affect quality |
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 | Data Quality Metric |
---|---|---|---|---|
05/28/2008 | 0000 | 08/04/2008 | 0300 | Incorrect |
Subject: | HFE/MWRHF/M1 - Rain sensor failure |
DataStreams: | hfemwrhfM1.b1 |
Description: | The rain sensor failed and the rain flag was always on. When the rain flag is on the radiometer does not perform tip curves. The rain sensor was replaced 8/4. |
Measurements: | hfemwrhfM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/02/2008 | 2341 | 12/28/2008 | 2359 | Incorrect |
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:
|