(a) Subpoenas and subpoenas duces tecum may be issued for attendance at a hearing and for production of documents at any reasonable time and place or at a hearing.
(b) The custodian of documents that are the subject of a subpoena duces tecum may satisfy the subpoena by delivery of the documents or a copy of the documents, or by making the documents available for inspection or copying, together with an affidavit in compliance with Section 1561 of the Evidence Code.