Compared to previous periods, channel 257 is not usable anymore, while
channel 309 came back to life. Also channel 93 should be usable for
date taken in this period, despite being located in group 4 (see below).
| Channel # | Description |
|---|
| 101, 103, 106, 110 |
Strong cross-talk: 101↔106 and 103↔110. 101 and 103 may be
usable for point sources only. |
| 81, 82, 83, 84, 85, 86, 89,
90, 91, 92, 93, 94, 96, 136, 159, 160 |
Channels located in group 4 / cable M. These channels usually don't show
any astronomical signal and are considered bad (except #93).
|
| 114, 116,
117, 118, 119, 120, 126, 128, 129, 130, 131, 132, 133, 134, 141, 147,
148, 152, 153, 154, 155, 156 |
Channels located in group 5 / cable L. These channels don't show
astronomical signal (factor 20 below normal) and are considered bad.
|
| 177, 179,
180, 182, 183, 184, 185, 191, 192, 201, 202,
203, 205, 207, 217, 218, 220 |
Channels located in group 7 / cable A. These channels don't show
astronomical signal and/or cross-talk and are considered bad.
|
| 6, 45, 170, 199, 204,
206, 208, 211, 213, 219, 228, 241, 257 |
Bad channels, not showing any astronomical signal or very low signal levels,
unconnected to groups 4, 5, or 7 above. |
channel_flags-2015-07.boa:
# 25 channels not connected to any bolometer
not_connected = [ 29, 33, 35, 40, 64, 66, 124, 135, 142, 144, 146, 151,
158, 189, 193, 195, 200, 224, 226, 284, 295, 302, 304, 306,
311 ]
# 20 channels with 1MOhm resistor
resistor = [ 15, 16, 87, 88, 95, 139, 143, 145, 149, 150, 157, 178,
181, 186, 187, 188, 190, 255, 310, 317 ]
# 2 channels sealed with an absorber
blind = [ 4, 163 ]
sealed = blind
# channels showing strong cross-talk
cross = [ 101, 103, 106, 110 ]
# Bad channels (no/low signal or very high noise)
bad = [ 6, 45, 81, 82, 83, 84, 85, 86, 89, 90, 91, 92, 94, 96,
114, 116, 117, 118, 119, 120, 126, 128, 129, 130, 131, 132, 133, 134,
136, 141, 147, 148, 152, 153, 154, 155, 156, 159, 160, 170, 177, 179,
180, 182, 183, 184, 185, 191, 192, 199, 201, 202, 203, 204, 205, 206,
207, 208, 211, 213, 217, 218, 219, 220, 228, 257, 241 ]
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