Dear Arun, 

Vels university chennai has NAAC A grade and is the Institute that is deemed to be university. 

There's a word that college has good quality education with well qualified professionals. The college is also well equipped, has better infrastructure, placement history  

For more details refer to :

https://www.google.com/url?sa=t&source=web&rct=j&url=https://dqxeclau.top/university/vels-institute-of-science-technology-and-advanced-studies-chennai/amp&ved=2ahUKEwjGmqCWpsHjAhX47HMBHbzrB28QFjAcegQIBRAB&usg=AOvVaw3gtGjMtqx80byOW46ETHko&ampcf=1

Hope this helps

Good luck.