The full form of CSAT is the Civil Services Aptitude Test. It was introduced in the year 2011 as a part of the UPSC Civil Services Exam (Preliminary) to test the analytical skills, reasoning ability and aptitude of IAS aspirants.
UPSC PRELIMS SYLLABUS
General Mental Ability
Decision Making & Problem Solving
Logical Reasoning & analytical ability
Interpersonal skills including communication skills