From what I know (my case as well) the decision made status is happening at Ottawa as they are happy with your file. They change status, recommend visa and transfer file to ND who then requests the passports. New Delhi is where all the delays are, they should ask you passport soon, but don't expect your status messages to work like others who gets processing done through ND for most part.
In those cases in ND, decision made status comes up when they have stamped your passport with visa unlike CPP-O for reasons I mentioned above.