fixed issues with bad pixel frequency map notebook.

Dear Karim,

I closed the previous merge request and opened a new one with the notebook concerning bad pixels frequency map, which is now corrected for all issues it had before, including the bug Michele has found with regard to exposure time's path. I have also updated my pycalibration directory so that there are no conflicts otherwise.

However, when I tried to run the new Offset_Time_Evolution.ipynb notebook, I get the following error at the very last cell when I want to send the bad pixel frequency map to calibration database as StaticBadPixels:

AttributeError Traceback (most recent call last) in 4 for const in dictionary: 5 metadata = ConstantMetaData() ----> 6 dconst = getattr(Constants.CCD(DetectorTypes.fastCCD), const)() 7 dconst.data = dictionary[const] 8 metadata.calibration_constant = dconst

AttributeError: type object '_InnerCCD' has no attribute 'StaticBadPixels'

Are you sure the StaticBadPixels attribution exist? Thanks very much for your time. Best Wishes, Kiana