What is a subpoena ?

Criminal contempt happens if the court summons a person to appear or present documents to punish the wrongdoer. It does not mean the person is in trouble.

It is a request made to the person to appear in court for legal proceedings or to produce some documents required for legal proceedings.

If a person who has got the subpoena summoned does not comply with the terms, it may lead to civil or criminal penalties like fines or jail time.