The CSAT paper in the UPSC exam, known as the Civil Services Aptitude Test, comprises two papers, one of which is qualifying in nature. Key features include **multiple-choice questions** that test a candidate's basic numeracy, comprehension, and logical reasoning skills. The paper has a total score of 200 marks and candidates must achieve at least 33% to qualify. The syllabus includes comprehension, interpersonal skills, and decision-making abilities. Performing well in CSAT is essential, as it serves as a filter for candidates advancing to the Main Examination.