Hi Srikanth

GATE AE (aerospace engineering ) provides admissions to the Master's programme in Engineering and Master's in science in various IITs and other engineering institutes.

Some of the colleges offering M.Tech. or M.Sc in Aerospace Engineering are  :

IISc Bangalore

IIT kharagpur

IIT Kanpur

IIT Madras

IIT , Bombay

IIST , Kerela

DIAT , Maharashtra

IIEST , West Bengal

BIT , Jharkhand

MIT , Chennai

For more information you can refer to the link below : https://engineering.careers360.com/colleges/list-of-me-mtech-in-aerospace-engineering-colleges-in-india

Hope it helps :)