Hello Anjan,

If you are comparing them both then According to the reviews and according to me doing Btech Cse in Presidency University Banglore would be a good option in comparison of Gitam University as it has good placement record in comparison and have good academic and infrastructure in comparison 

here i am sharing links for the colleges for your help 

https://www.careers360.com/university/presidency-university-bangalore

https://www.careers360.com/colleges/gitam-school-of-technology-bengaluru

Hoep it may help you in a good way and can ask for mor clarification