Vishvabala, there are many good colleges offering data science courses in Tamil Nadu. As you may be knowing, the quality of a college depends on several factors like faculty, curriculum, fees, environment, industrial experience etc. Here is the list of few top M.Sc Data Science colleges and universities which you can refer to:-

PSG COLLEGE OF TECHNOLOGY, COIMBATORE

VELLORE INSTITUTE OF TECHNOLOGY, VELLORE

COIMBATORE INSTITUTE OF TECHNOLOGY, COIMBATORE

LOYOLA COLLEGE, CHENNAI

RATHINAM GROUP OF INSTITUTIONS, COIMBATORE

Hope this helps you in choosing the correct college for pursuing your passion.