Dear iiser tvm seniors

How is the maths dept at iiser tvm and more specifically the i2 data science department. Like what do the teach in the i2 data science and how is it any different from nor.al b.tech in data science xause looking at the course list for i2 data science i could not really differentiate the b.tech and bsms course. So like is it the same and if not what is the difference?

What is the criteria on which someone can be admitted into i2 data science at the end of 2nd year. If its cgpa then what is the required cgpa.