In Islam all superstitions are strictly forbitten.
But it is very difficult for the human mind to be absolutely devoid of superstitions.
Looked from the point of view of an atheist, even atheist who swears there is no God has superstitions on some level.
Can one draw a clear line between faith in God and superstition?
Does your religion condemn superstitions? Feel free to quote scriptures.
Superstition can be a tricky concept to unpack. This is compounded by the fact that from what I know of Islam, there tend to be subtle variations in meaning that don't necessarily match common understandings among non-Muslims. It may be that due to cultural/translation differences, the Muslim concept of superstition is different to my own.
So, with that caveat out of the way I'll tackle this as best I can.
In its most general sense, superstition refers to a belief in the supernatural. Most (though not all) god concepts can be regarded as in some way supernatural and therefore would also be superstitious. An example of non-superstitious god belief here might be certain forms of pantheism.
Another way of interpreting superstition is as magical thinking. "If I walk under this ladder, my lottery ticket won't win any money." Or as it relates to deity perhaps something along the lines of, "If I say my prayers, good things will happen to me." In this context, slightly fewer god concepts would be superstitious in nature as you've added the requirement that a god is (or is at least perceived to be) interventionist as well as supernatural. An example of non-superstitious god belief here might be certain forms of deism.
In either case, belief in a god doesn't
always equate to superstition. However, there are an awful lot of god concepts that would, to some degree, be superstitious.