Read me file for run titled: KeysightGain_test2
Sequence span: 142 TO 281
lasernburst:5
DATE-OBS: 2021-10-14T13:16:42.401081
darktime: 2
KEY_GAIN: 2e-7
APERTURE: 2mm
ADDITIONAL NOTES: 
Can we use a gain of 200nC with a 2mm pinhole ?
The current offset box is setting dark current to ~-10n
NOTE: we purposefully apply a negative photocurrent, which is opposite direction of SC photocurrent.  
duration of run ~45 min, dark current no saturation is stable over this time ?