opportunities in ISRO after M.Tech in Aerospace

Join ISRO after M.Tech with less than 65% in B.E.

I have completed B.E. in mechanical , I am interested to join ISRO , Can I join ISRO having B.E. 62%. , if not now!! after masters in aerospace , If so which college should I join?? I have a gate 2017 score- 602 , Rank -6848