CSAT stands for the Civil Services Aptitude Test. It was first started in 2011 as a part of the UPSC examination (Preliminary). This examination helps in determining how strong the aspirant is in analyzing, reasoning, and natural ability to do something (aptitude test). All of these aspects are closely measured to shortlist the best candidate for IAS services.
This CSAT examination is typically called the General Studies Paper-II in the UPSC examination. Destination IAS Academy provides end-to-end coaching, mock tests, and study material together with online classes in Hindi and English medium.
For UPSC Prelims candidates, GSAT refers to the Civil Services Aptitude Test. On the other hand, it is termed General Studies (GS) Paper-II for the Union Public Service Commission (Mains) candidates, which is the polity paper.