A ''bad quiet''?
Only one I can think of at the moment would be when the forest or jungle goes quiet cuz there's danger!!!
Otherwise quite, to me, is peaceful.
If it wasn't it would not be quiet ---it would be filled with the chatter of thoughts. No?
Not that your thoughts can't be great.
(I am relating quiet with stillness --maybe others are not.)
.*I'll text in Navy Blue when I'm speaking as a Mod. :)