** India's Federal Bank FED.NS falls as much as 5.6% to 185 rupees; last down 1.3%
** Co's Q1 net profit falls 15% y/y amid rise in credit costs and provision for bad loans
** "The most disappointing part of the results were the slippage in asset quality which has been pristine for the bank and set it apart from peers," says Centrum Broking
** Anand Rathi expects a pick up in margins and stabilisation in asset quality from Q3
** YTD, FED shares down 3.2% vs a ~9% rise in the Nifty banking index .NSEBANK
(Reporting by Ananta Agarwal in Bengaluru)
((Ananta.Agarwal@thomsonreuters.com))