Tell me some key points about IITs from given text.

1. The Indian Institutes of Technology (IITs) are renowned public technical institutions owned by the Central government and located across India.
2. IITs are known for excellence in education owned by ministry of education of government of India.
3. The Institutes of Technology Act, 1961, which established them as Institutes of National
Importance and established their authority, accountability, and governing structure as the
nation&#39;s top technological institutions.
4. The act currently list 23 IITs. Each IIT is autonomous and linked with other via IIT council.
5. The ex officio Chairperson of the IIT Council is minister of education.