hi,

see as per ISRO off campus recruitment notifications for position of scientist B , the eligibility criteria is  mentioned in the notification is Candidates must complete BE/B. Tech or equivalent qualification in first class with an aggregate minimum of 65% marks or CGPA 6.84/10. however there is no surety that what will be ISRO on campus eligibility and it subjected to change time to time. however IIST considers as one of the best institute In India, so completing your m.tech from iist would surely help you to secure a job in reputed organization, but you must do hard work and sincere to your studies.