But when questions are rated then as "many low-quality questions" only by fact, that questions had been downvoted somehow ... ?
The question ban takes into account a number of factors, which although they have not been completely revealed, we do know some of them, including how many deleted questions you have, how many downvoted questions you have (and how many downvotes they have) and possibly closed questions.
From looking at your question record, I can see that you would have a good chance at being banned from one over the top question.
However, you really don't explain what you are getting at in your question, nor whether you have been banned or what.