Consider the following statements regarding the Central Administrative Tribunal (CAT):
1. It is a Constitutional body established by the original constitution.
2. The procedure for removal of members of CAT is the same as High Court judges.
3. It is not bound by the procedure laid down by the Civil Procedure Code, 1908.
4. The Selection committee for CAT members is chaired by a sitting Judge of Supreme Court.
How many of the above given statements are correct?