MBA is one of the big job oriented professional programme which help you to enter corporate world with wide exposure and great amount of knowledge, Most of the student after completing B.tech go for the Management programme, It will help you to gain a technical & practical knowledge along with Management skills. 

Based on this score you can get a call from new IIMs & Ultra New IIMs, You can have the chance from IIM Nagpur, IIM Sambalpur, IIM Amritsar, IIM Jammu etc. The other you can have the chences for the colleges DoMS, IIT Roorkee, Great Lakes Institute of Management, Chennai, BIM Trichy, Goa Institute of Management, Goa etc. You can check your other best possibilities with CAT Pathfinder Tool.

https://bschool.careers360.com/pathfinder/cat

If you wish to get a call from top IIMs then this is not the sufficient score however I would suggest you to go for the next year exam preparation.

Along with CAT score all the colleges in which you apply makes a merit list to call the students for the second round of interview and WSAT on the basis of your aggregate score and which is based on different parameters such as CAT marks, 10th, 12th and graduation percentage, work experience, engineer or non-engineer, gender etc. whose weightage vary according to different colleges.

Good Luck!