If I do B.Tech from a private college in CSE and then do M.Tech from IIT, what average salary can I expect?

If we talk about B.Tech then it is fine to do from private university but renowned, M.Tech from IITs need certain criteria for that, you have to prepare well during graduation. For B.Tech you can try for SRM University, Lovely Professional University and Amity University as you need to groom your sk