A chargesheet is a preparation document of accusation prepared by law-enforcement agencies in India, Pakistan and Bangladesh. It is distinct from the First Information Report (FIR) (which is the core document describes a crime that has been committed), usually refers to one or more FIRs, and charges an individual or organization for (some or all of) the crimes specified in those FIR(s). [unreliable source]  
Once the chargesheet has been submitted to a court of law, the court decides as to who among the accused has sufficient prima facie evidence against him to be put on trial. After the court pronounces its order on framing of charges, prosecution proceedings against the accused begin in the judicial system.
- What is a chargesheet?, The SIF Guide To Surviving IPC 498A, 2007-03-30, archived from the original on 2009-04-11, retrieved 2008-11-01,
Snippet: ... The charge-sheet is nothing but a final report of police officer under Section 173(2) of the Cr.P.C. ... This report is intimation to the magistrate that upon investigation into a cognizable offence, the Investigation Officer has been able to procure sufficient evidence for the court to inquire into the offence and the necessary information is being sent to the court. In fact, the report under Section 173(2), purports to be an opinion of the Investigating Officer that as far as he is concerned he has been able to procure sufficient material for the trial of the accused by the Court. ...
- "Scam framing of charges - a raja kanimozhi", Business Today