Gandhi Institute of Technology and Management Bhubaneswar

You will have to fill the form and then appear for entrance exam. Please refer to the link below for details information:
http://gsn.gitam.edu/images/NPCCProspectus.pdf

Admission to an M.Tech course from Gandhi Institute of Technology and Management (GITAM, Bhubaneswar) is done on basis of the GATE examination. Please refer to the link provided below for further details regarding admission to this course:
https://www.shiksha.com/engineering/course/m-tech-gandhi-inst

You have apply for lateral entry exam, then based on the ranking, you will get admission.

The counselling will begin from 2nd week of June.

Chances should be above average so you are advised to participate in the counselling.
Good luck.

Chances should be above average so you are advised to participate in the counselling.
Good luck.

Yes, you are eligible to apply for the GMAT exam. GMAC, the GMAT conducting body does not specify any eligibility criteria for GMAT 2018. However, it is imperative to obtain an undergraduate degree from a recognised university to appear for GMAT 2018 similar to any graduate management entrance exami

I think there is a mistake in your question.
Because GATE is meant for Post-Graduation courses but it can't make you to get into B.Tech
First of all, you have to complete your B.Tech to be eligible for the GATE.
But, if you want to join in B.Tech CSE in GITAM, you have to appear for GAT entrance exam