Question about download Add-Ons from the PSN Store

I’m trying to figure out where does the DLC add on content files go when you download it from the PSN store.  Does it go under the Game Data Utlity?  Or Saved Data?  I’m trying to delete some of these mandatory install data but I don’t want to delete anything that I have downloaded from the PSN store.  Like for Example Arkham Asylem’s map packs and Joker.  Or Juggernaut from Ultimate Alliance 2.  I’m trying to figure out where these files go once they are downloaded.