My friend completed her M.Tech in Telecommunication Technology and Management from IIT Delhi and also did some extra courses in Computer Technology from Electrical Department. 

These courses usually cover Software related topics with very less focus on mathematical analytics and circuit design. Students from Instrumentation backgrounds expect Analytics and Design but the reality is IIT Delhi has very limited choices in this field. Most of the optional courses offered are related to CS and are much more promising than Analytics. If you are okay with programming, coding, and software development then go for it at once.

Rest assured, you will never get to doubt the packages offered during the placements of Computer Technology. It has the highest packages among all the Electrical Department branches. 

You get what you seek, hence the more you are willing to get, the more opportunities you will have to explore other branches of IIT Delhi.