IAS is not a job or a dream its like a responsibility of the person to have it .Union Public Services Commission(UPSC) is a constitution body that conducts  Civil services examination(CSE) smoothly and Completes the recruitment process Every year.I am here to explain the exam pattern,Syllabus,eligibility and Cutoff marks briefly and make you have a broad overview about exam. lets have patience and read till end its the first qualification to become an IAS

Firstly we need to know what services would Exam be conducted by UPSC CSE.UPSC CSE conducts exam for 21 services which are broadly classified into 3 categories 

1.All India Civil Services (IAS,IPS,IFos)

2.Group 'A' Civil Services

3.Group 'B' Civil Services

Ministry of railways consulted UPSC and DoPT Added IRMS services to be conducted by The UPSC  from 2023 

From past few years UPSC guarantees:

1.Upsc releases the exam Notification every year

2. It's releases the job calendar every year

3.Process takes almost one year from the date of prelims

4.After the announcing results of previous year batch only it further conducts the next batch prelims exam

The UPSC CSE has the Three Tire Structured Exam Pattern 

1.Preliminary examination 

2.Main Examination 

3.Interview

Let's see how long it takes to complete entire procedure Requirement process from issuing of notification to announcing Results .your can observer it from the following table below

YearDate of notification issuedPreliminary examMains examFinal result
2013March 5th ,2013May 26th,2013December 1st,2013June 12th,2014
2014May 31th,2014August 24,2014December 14th,2014July 4th,2015
2015May 23rd,2015August 23,2015December 18th,2015May 10th,2016
2016April 27th,2016August 7th,2016December 3rd,2016May 31st,2017
2017February 22nd,2017June 18th,2017October 28th,2017April 27th,2018
2018February 7th,2018June 3rd,2018September 28th,2018April 5th,2019
2019February 19th,2019June 2nd,2019September 20th,2019August 4th,2020
2020February 12th,2020October 4,2020January 8th,2021August 4th 2021
2021March 4th,2021October 10th,2021January 1st, 2022May 30th,2022
2022February 22nd,2022May 26th,2022September16th,2022May 23rd,2023
2023February 1st,2023May 28th,2023September 15th,2023
Awaiting

As i mentioned before,UPSC releases Notification every year. Its takes almost one year to complete the entire requirement process.It basically releases notification on the month of February every year.
Now let's see the procedure of UPSC

1.HOW MANY NUMBER OF POSTS DOES UPSC RELEASES IN NOTIFICATION?
It's releases average of 700 postes every year but with the include of IRMS services it may announce posts upto 1100 every year

2.HOW MANY WILL APPLY FOR THE POST?
 More than 13 lakh people apply for UPSC CSE every year

3.WHO ARE ELIGIBLE FOR THE POST?
A)BASED ON RESIDENT
i)For ALL INDIA CIVIL SERVICES,
   only citizens of India are eligible
ii)For All OTHER SERVICES(A&B)
 He must best be citizen of India
                (or)
NEPAL Residents 
                 (or)
BHUPAL Residents 
                 (or)
TIBETIAN People who migrated to India before 1962 are eligible 

B)BASED ON AGE LIMIT
i)Minimum 21 years of age and maximum age of 32
Exceptions:
Age Relaxation
ST/SC -- up to attain age of 32
OBC ---  3 Years 
Ex-serviceman----5 Years
ii)Number of Attempts 
CategoryNumber of Attempts
SC/STUnlimited
OBC09
PwBD09 for GL/EWS/OBS(Unlimited to SC/ST)
 C)BASED ON EDUCATION QUALIFICATION
  Must be Any Graduate from Recognized University
Note:Final year graduates can also eligible for apply but only students who submit documents at the time of the Main examination are going to write mains that means The results of the final year students final results must be declared before mains are eligible
4)EXAM PATTERN
Three tier structure which have both Objective and Descriptive type examination
                      A)PRELIMINARY EXAMINATION
                      B)MAINS EXAMINATION
                      C)PERSONALITY TEST (INTERVIEW)
I will briefly explain the exam pattern and what its consists of
NOTE:Exam will be conducted in offline only
 A)PRELIMINARY EXAMINATION:
  This is like the elimination round its consists of two papers .Both the papers are Objective type that is OMR based model. For Both the papers,Exam will be conducted on the same day General studies on morning and CAST on Afternoon.All the exams are conducted in offline mode only.
NOTE 1: Paper is in the medium of ENGLISH and HINDI only (this is one of the drawback)
NOTE 2: Marks of the preliminary exam was not consider in the final list of marks
NOTE 3: Only after the correction of CSAT.Only CSAT Qualified member of GENERAL STUDIES paper is corrected 

SUBJECTNUMBER OF QUESTIONSMARKSDURATION
PAPER --1GENERAL STUDIES1002002 HoursMERIT
PAPER--2CSAT802002 HoursQUALIFYIN

General Studies paper consists of 100 questions each question carries two mark 
CSAT paper consists of 80 questions each question carries two and half mark(2.5)
Both the paper has NEGATIVE MARKS of one-third (0.33)
CSAT is just qualifying paper one must need to get 33% of toatl marks 
Candidates are Selected only marks obtained on GENERAL STUDIES paper 
 NOTE: Every year only less than 0.15% of exam appeared qualify for Mains exam(thats is less than 15000)
B) MAIN EXAMINATION:
Paper is Descriptive in Nature.Medium of language will be of any official language must be from schedule eight of constitution .There are toatally  NINE Papers In that Two are qualfying in Nature and remaining are  based on the merit.The Obtained marks are consider in the final list of marks

PAPER MARKS DURATION
PAPER A 300 3 HOURS QUALIFYING
PAPER B 300 3 HOURS QUALIFYING
ESSAY 250 3 HOURS MERIT
PAPER 1 250 3 HOURS MERIT
PAPER 2 250 3 HOURS MERIT
PAPER 3 250 3 HOURS MERIT
PAPER 4 250 3 HOURS MERIT
OPTIONAL PAPER 1 250 3 HOURS MERIT
OPTIONAL PAPER 2 250 3 HOURS MERIT
PAPER A is a language choosen from the schedule eight of Indian Constitution
PAPER B is a English language 
Both PAPER A and Paper B are qualifying in nature on must obtain the 25% of total marks of that subject are qualified
NOTE:After the correction of qualifying papers.If he Obtain qualify marks then only the remaining merit papers will be corrected
NOTE2:Only 0.05% will be called for the interview(that is less than 2000)
INTERVIEW/PERSONALITY TEST:
 This is the final state of UPSC CSE. Here the candidates are called for the interview its consists of 275 marks. Its a test of your personality. After the personality test results are announced 

MARKS
SUB TOTAL (WRITTEN TEST)1750
PERSONALITY TEST275
TOATL MARKS 2025
5)SYLLABUS OF UPSC CSE:
Syllabus of UPSC is so Dynamic and syllabus is open ended we cannot expect the questions .We say just syllabus is only a reference .I will classify the syllabus outline only for the detailed syllabus one must need to approach the Official Website
A)SYLLABUS OF PRELIMINARY EXAM 
                                              Paper I - (200 marks) Duration: Two hours
i) Current events of national and international importance.
ii) History of India and Indian National Movement.
iii) Indian and World Geography-Physical, Social, Economic Geography of India and the World.
iv) Indian Polity and Governance-Constitution, Political System, Panchayati Raj, Public Policy, Rights
Issues, etc.
v) Economic and Social Development-Sustainable Development, Poverty, Inclusion, Demographics, Social
Sector Initiatives, etc.
vi) General issues on Environmental ecology, Bio-diversity and Climate Change - that do not require
subject specialization.
vii) General Science.
                                               Paper II-(200 marks) Duration : Two hours
i) Comprehension;
ii) Interpersonal skills including communication skills;
iii)Logical reasoning and analytical ability;
iv)Decision making and problem solving;
v) General mental ability;
vi) Basic numeracy (numbers and their relations, orders of magnitude, etc.) (Class X level), Data
B)MAINS EXAMINATION:
QUALIFYING PAPERS ON INDIAN LANGUAGES AND ENGLISH
 The aim of the paper is to test the candidates' ability to read and understand serious discursive proseand to express ideas clearly and correctly, in English and Indian language concerned.
 The pattern of questions would be broadly as follows;
                                                                  PAPER A
(i) Comprehension of given passages.
(ii) Precis Writing.
(iii) Usage and Vocabulary.
(iv) Short Essays.
                                                                  PAPER B 
Indian Languages 
(i) comprehension of given passages.
(ii) Precis Writing.
(iii) Usage and Vocabulary.
(iv) Short Essays.
(v) Translation from English to the Indian Language and vice-versa.
                                                                   PAPER-I
Essay: Candidates may be required to write essays on multiple topics. 
                                                                   PAPER-II
General Studies-I: Indian Heritage and Culture, History and Geography of the World and Society.
                                                                   PAPER-III
General Studies- II: Governance, Constitution, Polity, Social Justice and International relations.
                                                                   PAPER-IV
General Studies-III: Technology, Economic Development, Bio diversity, Environment, Security and
Disaster Management
                                                                   PAPER-V
General Studies- IV: Ethics, Integrity and Aptitude
                                                        PAPER-VI & PAPER VII
Optional Subject Papers I & II 
There are various optional subject candidate should select one.it is same for both paper I and paper 2
1 Agriculture Syllabus
2 Animal Husbandry and Veterinary Science
3 Anthropology 
4 Botany 
5 Chemistry
6 Civil Engineering 
7 Commerce & Accountancy
8 Economics
9 Electrical Engineering
10 Geography
11 Geology 
12 History 
13 Law
14 Management
15 Mathematics 
16 Mechanical Engineering 
17 Medical Science 
18 Philosophy 
19 Physics 
20 Political Science & International Relations 
21 Psychology 
22 Public Administration 
23 Sociology 
24 Statistics 
25 Zoology
26.Literature
If  you opted to Literature optional subject than  you want to choose one from below
1 Assamese 
2 Bengali
3 Bodo 
4 Dogri 
5 Gujarati 
6 Hindi 
7 Kannada
8 Kashmiri 
9 Konkani 
10 Maithili 
11 Malayalam 
12 Manipuri 
13 Marathi 
14 Nepali 
15 Oriya 
16 Punjabi 
17 Sanskrit 
18 Santhali
19 Sindhi 
20 Tamil
21 Telugu
22 Urdu
23 English
The candidate who preparing for upsc he must had a copy of syllabus .Syllabus is the guide to UPSC CSE
6)CUTOFF MARKS
Following are the cutoff marks given below you can get an idea about it
                                                 2020 CUTOFF MARKS
EXAM GENERAL EWS OBC SC ST PwBD-1 PwBD-2 PwBD-3 PwBD-4
CS(Prelim) 92.51 77.55 89.12 74.84 68.71 70.06 63.94 40.82 42.86
CS(Main) 736 687 698 680 682 648 699 425 300
CS(Final) 944 894 907 875 876 876 910 675 465
                                                 2021CUTOFF MARKS
EXAM GENERAL EWS OBC SC ST PwBD-1 PwBD-2 PwBD-3 PwBD-4
CS(Prelim) 87.54 80.14 84.85 75.41 70.71 68.02 67.33 43.09 45.80
CS(Main) 745 713 707 700 700 668 712 388 560
CS(Final) 953 916 910 886 883 892 932 689 701
                                                  2022 CUTOFF MARKS
EXAM GENERAL EWS OBC SC ST PwBD-1 PwBD-2 PwBD-3 PwBD-4
CS(Prelim) 88.22 82.83 87.54 74.08 69.35 49.84 58.59 40.40 41.76
CS(Main) 748 715 714 699 706 677 706 351 419
CS(Final) 960 926 923 893 900 879 913 632 590
More than 10 lakhs students appear in exam but the number of posts is not more than 800 in average so one must think before when you entering the ocean.
In my comming blogs i will clearly explain the strategy and upsc topices in brief 
ALL THE  BEST FOR THE UPSC ASPIRANTS