Electronics and Communication Engineering

As both Shiv Nadar and SASTRA are good for pursuing B.Tech. But, I reccomend you to go for SASTRA University. There are lots of streams available for you like B.Tech in CSE, IT, ME, civil engineering, chemical engineering, Biomedical engineering, Biotechnology, Food technology, Electrical engineering, EEE, Electronics, Automobile engineering and others. The most important thing which rely totally on your area of your interest. When you are sure about your area of interest then you can choose the above engineering streams for pursuing your graduation. There may not be many institutes and universities which will be offering you all such engineering courses in one campus. You should prefer the university or institute which offers you good placements and good practical and industrial exposure also and should have good infrastructure also.

As such, you should choose according to your interest, preference and inclination. Bhut here are few points that y1ou can keep in mind while selecting.
1. EEE is like a mother branch and ECE is sort of derived from it. Both have a number of similar subjects. Their dissimilarity lies in that ECE has major focus on semiconductor, transistor, op-amp, microprocessor etc. EEE also touches these domains but maybe not as deeply. ECE also has communication subjects like DIGITAL SIGNAL PROCESSING, Analog signal processing, satellite communication etc. , whereas EEE has subject on motors, Transformers, Grid lines etc. (I don't know much about EEE subjects that are taught). So you can choose according to your aligned interests
2. This also depends upon the college you are going to join and the faculty there and which stream gets better placements and packages. (coz nowadays stream doesn't matter much until and unless you're joining a core company which specifically requires your skill sets and knowledge in a particular domain. And most of us end up in IT industry)
So select accordingly. Cheers.