Table 1
Overall budget of discarded data samples for the 50 valid bolometers.
Origin | Mean fraction loss [%] | Range [%] |
|
||
Glitch ............................................. | 20 | 9–32 |
Depointing .................................... | 8 | 8–8 |
Common discarded rings ......... | 2 | 2–2 |
RTS .................................................. | 0 | 0–4 |
4-K .................................................. | 4 | 0–16 |
Total .......................................... | 31 | 17–46 |
Notes. Two bolometers, one at 143 GHz and one at 545 GHz, cannot be used, due to a permanent random telegraphic signal (RTS) and are excluded from the statistics. A global average is given for glitches. Here, depointing denotes only the standard manoeuvres from one ring to another. Big manoeuvres are included in the common discarded rings (but not the 4-K line selection process). The RTS affects six bolometers episodically. The 4-K line selection process affects 20 bolometers (see Sect. 3.3). The range of values obtained for different bolometers is given in the last column. Note that percentages do not add up to the total, since depointing, common rings, RTS and 4-K flagged samples are already flagged at the 20% level due to glitches.
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