Dear Pratik

Both IT and CSE are good. Its up to you to decide which course you want to pursue, based on your interests.

IT is more of a Professional track course. You are taught about systems and their functioning on a need to know basis. You are taught regarding the basic applications of a technology. It makes you an expert at the surface level of the tech, which will aide you to develop skills required at the industrial level. A good example would be a Network Administrator. You need to know about Networking and some basic hardware and software rules. IT can teach you what you need to know about their functionalities.

Computer Science and Engineering on the other hand, is dedicated to both professional and research tracks. A Computer Engineer is someone who would have indepth knowledge about the Hardware systems as well as the Software systems. Although, Computer Engineers are often categorised with Electrical Engineers. As they are both dedicated to expertise in the Hardware division while having above average knowledge on Theoretical or Software division of Computers. You will observe that most Universities have a common department for CS and EE. E.g. EECS in MIT.

A Computer Scientist is the opposite to a Computer Engineer. Computer Scientists work on Software systems and Theoretical CS. Either ways, CSE combined will give you an excellent in depth knowledge about the workings and principles of both Hardware and software systems. Whereas IT, with a similiar coursework as CS, would not give you such in-depth knowledge.

In Summary, if you are interested in becoming an expert on Computers, you would do well to choose CSE, be it becoming an Engineer or a researcher. If you think that you want to pursue a more professional course, than IT would be more suitable for you.
Hope, I've cleared your dilemma.
All the best.