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Table A.1
Standard artefacts removed from LYRA observations before applying LYRAFF.
| Artefact | Description | |
|
|
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| ASIC reload | Reload of the application apecific integrated circuit. | |
| Calibration | Calibration campaign. | |
| Glitch | Undefined glitch. | |
| LAR | Large angle rotation. 90° rotation of satellite lasting a | |
| few minutes. Cause spikes and dips in the signal. | ||
| Moon in LYRA | Moon in LYRA field of view which can cause | |
| non-solar variations in signal. | ||
| Offpoint | PROBA2 offpointed from disk centre potentially altering | |
| signal artificially. | ||
| Operational anomaly | Unexplained anomaly. | |
| Recovery | Time taken for LYRA detectors to get back to full efficiency | |
| after not being exposed to sunlight. Can take many hours. | ||
| SAA | Transition of PROBA2 through the South Atlantic anomaly | |
| causing increased noise in signal. | ||
| UV occultation | Solar irradiance attenuated by Earth’s atmosphere. | |
| Defined as when PROBA2’s tangential altitude is ≤350 km. | ||
| Visible occultation | Solar irradiance is blocked by the disk of the Earth. | |
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