One of my friends graduated from Pondicherry University. Here are some things you need to know about it before making a decision.
My friend got a good rank (read AIR-1) in 2014 but he ended up pursuing it in NIT Durgapur. So think wisely.
In general Pondicherry University is a good university. But not fit to meet the requirements of the industry. Better join some other university. In the long run, PU is not a good option. Placements are not up to the mark.
Pondicherry University's campus is extremely student-friendly, with free wifi available 24 hours a day and clean female hostels. It has the most extensive library. There is a free bus service on campus, as well as a shopping complex and other amenities. Paperwork and administrative tasks are also completed on time. Pondicherry is also a lovely location. You receive all of the advantages of studying at a Central University.
The syllabus at Calicut University which is a state university is excellent, but administrative support is lacking. Your certificates will not arrive on time. And the first-semester end exam will be held during the second semester's end, which is extremely complicated. Calicut University has a good campus, as well as a good library.