CMO Sensor calibration


I read the application note about CMOsensor calibration (Pixel to irradiance) shared by Parrot on the following link: Parrot Announcement - Release of application notes

The mathematical formula is very clear and easy to apply, but I just have two questions:
-About Pixel value, what should be the unit for pixel value? I guess it is the range [0;2^16] (16 bit) but i’m not sure. Can you confirm it?
-About Dark Current computation, can you confirm that this phenomenom is taken into account in this method? Because the release of application notes explains that this topic is adressed in the application notes but i didn’t see that nowhere…
If not, can you explain how to compute dark current computation using the exif tags?

Thank you for answering, bye
And have a good day!