No the CAT exam is for MBA course. For becoming a data analyst for studying data analysis you have to to perceive other Bachelor of Science or Bachelor of Technology course. The bachelor of science or bachelor of Technology courses offered with Data analytics specialisation. At the 12th class level you have to study Science, Mathematics, statistics and Economics for making your Foundation strong for Data analytics. I am mentioned below the name of the courses which you can do in the field of data analyst:

• Data analyst certificate
• Python data analysis
• Data analysis using pandas and python
• Data analysis and decision making.

Besides this I am also mentioning below the name of the top colleges/ universities which offer courses in Data analytics:

• National Institute of Technology Trichy
• Indian Institute of Technology Dhanbad
• Kalinga Institute of industrial Technology
• Jaypee Institute of Information Technology University
• Lovely professional University
• National Institute of Technology Delhi
• Indian Institute of Information Technology design and manufacturing Kurnool.

Read More about Data analytics:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/careers/data-analyst&ved=2ahUKEwjh89vq6Pf0AhUFJaYKHVORDQMQFnoECAYQAQ&usg=AOvVaw0faktKDrs4KLBfKe5oLmeQ