Question

who is our Indian constitution and writer

Answer 1

The Assembly met in sessions open to the public, for 166 days, spread over a period of 2 years, 11 months and 18 days before adopting the Constitution, the 308 members of the Assembly signed two copies of the document (one each in Hindi and English) on 24 January 1950. The original Constitution of India is hand-written with beautiful calligraphy by Prem Behari Narain Raizada and each page beautified and decorated by artists from Shantiniketan including Beohar Rammanohar Sinha and Nandalal Bose.


and Indian Political Forum

The original copies are kept in special helium-filled cases in the Library of the Parliament of India.



The reason however is simple. Consider the following, again from wiki - 

Finally on 26 Nov. 1949, the process was completed and Constituent assembly adopted the constitution.


However, 

The 308 members of the Assembly signed two copies of the handwritten document (one each in Hindi and English) on 24 January 1950

Answer 2

HEY MATE HERE IS YOUR ANSWER

the constitution of India is the supreme law of India the document list down the Framework creating fundamental political code structure procedures powers and duties of government institutions and sets out fundamental rights Directive principles and the duties of citizens and written by DOCTOR BHIM RAO AMBEDKAR