Hello Shreshta.

See the marks u have scored is enough for u to qualify the GATE exam but it is not even sufficient to get u admissioned in the good colleges for pursuing ur further studies so choosing PSUs with this marks is not a appropriate thinking.

See the paper this year was easy too as compared to the previous 4 years paper so the cut off will surely rise and it will make much more difficult for u to get even admissioned. So choose some colleges which accept low marks for further studies or aim for another chance.

Hope u got my point. Ask if u are having any doubt.

Good luck