Unusual MAF signal

I have a strange drop in a mass air flow signal, and I would just like to know if anybody could explain the theory behind it to me, the car is a 2002 Mercedes c200 which is a 1.8L with a super charger, I’m guessing the drop is caused by either some sort of back eddy in the manifold or even a throttle body closing and then re opening under decel, am I right in thinking this is a signal specific to a supercharged engine ? but any input would be cool

Possible it could look like that if the bypass valve is sticking or has a vacuum leak