Does a celestial eating a sandwich cause disturbance? How about exploding a grenade that damages nothing other than itself?
In Nomine, p.55, “Everything that celestials do on Earth creates foreign notes in the Symphony. Most are small and easily overlooked. But certain actions, if taken by a celestial, will create dramatic reverberations which can draw attention.” So, basically, minor things are lost in the background noise of the Symphony. Things that are designed to be broken up (like a grenade) do not cause a disturbance when they blow as long as nothing else is damaged; the GM should err on the side of things being disturbing, though. On the other hand, some beings might be able to detect even “microscopic” disturbances . . .
