The Osmania University has not released any cut-off marks or ranks for the MSc program in the Computer Science branch as of now, so you can just predict as of now according to your rank. In the previous year's cut-off also, only marks have been mentioned and so it is a bit difficult to predict. You have secured a very decent rank and also you are from the bc-b category, so there might be a chance of you getting a seat in Osmania University in the MSc in Computer Science branch.

All the best.