Crackling sound and a thin layer of something on the surface before water boils
I am making a guess here, but a guess based on my own experiences.

You have an induction glass top stove, and you are putting the pot down on top of it wet. The water is getting trapped under the pot, and once it is able to reach boiling (just before the water in your pot does). It is starting to pop (like popcorn).

It pops because it is trapped. Because the pot is wet it gets "sealed" to the stove top, and the steam can't escape until it builds enough pressure to lift the heavy pot just enough for the gas to escape violently.

The way to make it stop is to dry the outside of the pot after you wash it and/or before you cook.