I recently ran a query against the WMFlabs servers databases - https://quarry.wmflabs.org/query/6052
which produced some 'phantom' results that could not be found through the English Wikipedia UI, suggesting that they had been deleted, or that something had become mis-linked.
A disscussion on #wikimedia-operations suggested that any deleted file should have shown up in the replicated copies of the enwiki database concerned.
From the IRC chat -
"07:45, 31 March 2016 Closedmouth (talk | contribs) deleted page File:BIT central teaching building panorama.jpg (F7: Violates non-free content criterion #1) " yet this item still appears listed in the query results.
Can someone look into this?