Explanation:

To inquire or cause an inquiry of alleged offence of a public servant is the main function of Central Vigilance Commission.
Other functions are given below:
1) Exercise superintendence over the functioning of the Delhi Special Police Establishment (CBI) insofar as it relates to the investigation of offences under the Prevention of Corruption Act, 1988; or an offence under the Cr.PC for certain categories of public servants – section 8(1)(a);
2) Give directions to the Delhi Special Police Establishment (CBI) for superintendence insofar as it relates to the investigation of offences under the Prevention of Corruption Act, 1988 – section 8(1)(b);
3) To inquire or cause an inquiry or investigation to be made on a reference by the Central Government – section 8(1)(c);
4) To inquire or cause an inquiry or investigation to be made into any complaint received against any official belonging to such category of officials specified in sub-section 2 of Section 8 of the CVC Act, 2003 – section 8(1)(d);
5) Review the progress of investigations conducted by the DSPE into offences alleged to have been committed under the Prevention of Corruption Act, 1988 or an offence under the Cr.PC – section (8)(1)(e);
6) Review the progress of the applications pending with the competent authorities for sanction of prosecution under the Prevention of Corruption Act, 1988 – section 8(1)(f);
7) Tender advice to the Central Government and its organizations on such matters as may be referred to it by them – section 8(1) (g);
8) Exercise superintendence over the vigilance administrations of the various Central Government Ministries, Departments and Organizations of the Central Government – section 8(1)(h);
9) Shall have all the powers of a Civil court while conducting any inquiry – section 11;
10) Respond to Central Government on mandatory consultation with the Commission before making any rules or regulations governing the vigilance or disciplinary matters relating to the persons appointed to the public services and posts in connection with the affairs of the Union or to members of the All India Services – section 19.
11) The Central Vigilance Commissioner (CVC) is the Chairperson and the Vigilance Commissioners (Members) of the Committee, on whose recommendations, the Central Government appoints the Director of Enforcement – section 25.
12) The Committee concerned with the appointment of the Director of Enforcement is also empowered to recommend, after consultation with the Director of Enforcement appointment of officers to the posts of the level of Deputy Director and above in the Directorate of Enforcement – section 25;
13) The Central Vigilance Commissioner (CVC) is also the Chairperson and the Vigilance Commissioners (Members) of the Committee empowered to recommend after consultation with Director (CBI), appointment of officers to the post of the level of SP and above except Director and also recommend the extension or curtailment of tenure of such officers in the DSPE (CBI) - Section 26 and Section 4C of DSPE Act, 1946.