CAT

I'm sorry to inform you that you at least need 70%le in CAT. A composite score of 600 or above in the Management Aptitude Test (MAT) conducted by AIMA in either September - 2015 or December 2015 OR a composite score of 450 or above in GMAT 2015 OR 70 percentile or above in the Common Management Admission test (CMAT 2015) OR 70 percentile or above in the Common Admission test 2015 (CAT) conducted by the Indian Institutes of Management (IIMs) OR 70 percentage or above in the AIMS Test for Management Admissions (ATMA) 2015 And 50% or above marks in aggregate in the undergraduate examinations. (Applicants who are in the final year of their studies should have 50% or above aggregate in all the semesters / years of undergraduate examinations conducted so far). Students writing their final degree examinations during March-May 2016 are also eligible to apply.

Minimum CAT percentile required is 70 to be eligible for admission process, along with minimize of 50% in UG. A composite score of 600 or above in the Management Aptitude Test (MAT) conducted by AIMA in either September - 2015 or December 2015 OR a composite score of 450 or above in GMAT 2015 OR 70 percentile or above in the Common Management Admission test (CMAT 2015) OR 70 percentile or above in the Common Admission test 2015 (CAT) conducted by the Indian Institutes of Management (IIMs) OR 70 percentage or above in the AIMS Test for Management Admissions (ATMA) 2015 And 50% or above marks in aggregate in the undergraduate examinations. (Applicants who are in the final year of their studies should have 50% or above aggregate in all the semesters / years of undergraduate examinations conducted so far). Students writing their final degree examinations during March-May 2016 are also eligible to apply.

Hi Sidak,
Yes, the two exams you have mentioned are poles apart. CAT/UPSC is a very common doubt among people when they start considering future options.
1. Become a voracious reader of newspapers (The Hindu/ Indian express). This would help you with the following:
A. Your reading ability goes a few notches above, your vocabulary is bound to be enriched and these are areas which at any given day is going to help you with the Verbal part of management exams which is tested.
B. Your knowledge content goes leaps and bounds ahead and suddenly you would, which will inevitably provide you with a strong foundation of 2 out of 4 GS papers (General studies). Every civil aspirant goes through this newspaper for hours on a daily basis.
2. Aptitude: This is a part which is tested by both the exams (The difficulty is definitely a bit higher for CAT than UPSC), but the fundamentals or the syllabus is 10th Grade mathematics. My suggestions for the same:
A. Quantitative ability: Please refer to standard books by Arun Sharma, the approach of the book is quite generic and complete it in entirety and keep developing your quantitative problem solving skills. There are a lot of books other than Arun Sharma for the same.
B. Data interpretation and Logical reasoning: Right from solving crossword puzzles to Shakunatala Devi, keep tuning your mind to exceptional level of analytical and reason/logic based thinking.
With the above two you would obviously be clear to CSAT Prelims and CAT at the end of two years, and with a time frame of 700-800 days you would be in a situation to prioritize on a stronger note and follow your gut based on hard-work and inputs.
Hope this information helps. Please feel free to revert.
Wish You Luck!