Explanation:

A writ or order of mandamus is an extraordinary court order because it is made without the benefit of full judicial process, or before a case has concluded. It may be issued by a court at any time that it is appropriate, but it is usually issued in a case that has already begun.
Right to constitutional Remedies (Articles 32 - 35):
Article 32 - When a citizen finds that any of his fundamental rights has been encroached upon, he can move the supreme court, which has been empowered to safeguard the fundamental rights of a citizen.  This right has been called Soul and heart of the Constitution by BR Ambedkar.
Forms of Writ check -
The Supreme Court under article 32 and the High Court 226 can issue the writs of habeas corpus, mandamus, prohibition, and    quo-warranto.
Habeas Corpus- It is a Latin word means “To have a body of”. It is an order issued by the Court to a person who has detained another person to produce the body of the latter before it.
Mandamus - It literally means “We Command.” A mandamus is an order from a court to an inferior government official ordering the government official to properly fulfill their official duties or correct an abuse of discretion.
Prohibition - Means “to forbid.” It is issued by the higher court to lower court to prevent the latter exceeding its jurisdiction or usurping a jurisdiction that it does not posses.
Quo- Warranto - It means  “By What Authority.” It is issued by the court to enquire into the legality of claim of a person to a public office.