My brother was a student at NIT Calicut so I have information on the boy's hostel only. The first-year students are allocated to 2 hostels namely Hostel A and Hostel PG-1.
Hostel A
Hostel PG-1
Hostel A seems to have better facilities than PG-. So if you get the second one, be ready to compromise on many things with your roommate.
Common facilities in both hostels
Here are a few common amenities that can be found in both the boys' hostel
Overall, the hostel facilities at NIT Calicut are like any other institute, average and tolerable.