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S30XL-LESA/LDMX
The noise is around 16 ADC units across all the channels. The channels receiving pulses have narrow distributions.
Using the 0 V noise data, here is a list of channels below 30 ADC counts of ENC:
Sector B Sector A
i i%128 128+(i%128) 2*128-(i%128)-1 128-(i%128)-1
APV1
131 3 131 252 124
159 31 159 224 96
162 34 162 221 93
179 51 179 204 76
211 83 211 172 44
255 127 255 128 0
APV2
262 6 134 249 121
263 7 135 248 120
274 18 146 237 109
284 28 156 227 99
304 48 176 207 79
307 51 179 204 76
341 85 213 170 42
369 113 241 142 14
373 117 245 138 10
APV3
384 0 128 255 127
482 98 226 157 29
497 113 241 142 14
APV4
617 105 233 150 22
634 122 250 133 5
The pinholes reported for this sensor by the fab are:
Sector A:
Sector B: [98]
This is 13 total pinholes reported, whereas we see 20 low noise channels.
If we assume this APV mapping:
Then all 13 reported pinholes are low noise channels.
Looking at sample 3 since this is closest to the peak of the pulse.
This is calgroup 3 Channel 482 ADC distribution (expected shape)
Channel 355: Channel 307:
All channels in APV2 have the extra peak below the main peak.
The channel seen in APV1 above is a reported pinhole (channel 211):
Not all reported pinholes look strange like this (channel 179):
Fill page with plots during production of L0 gimp.