It is very hard to make this device defect free.
Various pixels can be completely dead or has an optical response which deviates from the mean value.
We are looking for support to develop new and evaluate existing error correcting algorithms which we can include in our digital signal processing to cleverly correct pixels defects and column defects. 1 dimensional correction schemes are available, but 2 D correction algorithms still have to be developed. New correction algorithms need to be checked and evaluated by means of simulation. It is very hard to make this device defect free.