signal=244 + 344 t 20DN rms residuals =228 + 343 t -.38 t2 1.2 DN rms residualsShows that there is a downward saturation term of fractional percent value.
It also shows that there is an offset of 0.66 seconds in the exposure time. This is consistent with the read time of .656 seconds.
The maximum saturation level of 23,000 DN corresponds to 667,000 electrons. The reset voltage at the time was 0.75V.