Hi aspirant

Thanks for asking your query,look computer science engineering and c.e data science are two different field of engineering but to work in ISRO c.e data science will be more helpful to you because there you have to analyze the data related to astrophysics and space science.

Hope this could help you

Hello Dear
If you have option in same college then go for CSdata science. As it is more easy to get in it. But there is only difference in curriculum as CS Data Science have software and hardware focused Study.
Best Wishes...!!
Thank You for Reading...!!

Hey Semantha, If you want to join in ISRO you can join in any stream of engineering.For a mission various stream engineers work together.So, choose the one in which you have interest and passion.

If you can join in IIST you can directly into ISRO after your B.tech/Dual Degree.

These are courses in IIST

4-Year B.Tech. ( Aerospace Engineering )

4-Year B.Tech. (Electronics and Communication Engineering (Avionics))

5-Year Dual Degree (B.Tech. + Master of Science/Master of Technology) 

All the Best!