The CSAT paper is crucial in the preliminary exams of UPSC as it evaluates candidates' ability to comprehend and analyze information, which are fundamental skills for civil services. This paper assesses comprehension, logical reasoning, and analytical abilities. A qualifying score in CSAT is necessary to clear the preliminary stage, ensuring that aspirants possess the essential skills needed for administrative roles. Additionally, the CSAT acts as a filter to gauge the aptitude of candidates, indirectly fostering a focus on developing necessary skills for future public service responsibilities.