The Cut off calculation for NATA exams in Anna University is done like this - 

It has to be at least 50%

50% of Aggregate marks of the Tamil Nadu Higher Secondary Exam with subjects including Mathematics, Physics, Chemistry,

Language, English and additional subjects - 200

50% of NATA Score - Aptitude Test including the Paper based Drawing Test and the Computer based Online

Aesthetic Sensitivity Exam- 200

The total marks is 400.

Hi reddy

thanks for asking your query as per your marks in NATA 2019 you could easily get good colleges through the counselling because last year cutoff of colleges were 78 to 56 marks for general category 

hope this could help you to solve your query