TCDataHeader# class stixcore.tmtc.packets.TCDataHeader(bitstream)[source]# Bases: object TM Data Header ccsds_flag# CCSDS secondary header flag Type: int pus_version# PUS version Type: int ack_request# Acknowledgment request flag Type: int service_type# Service Type Type: int service_subtype# Service Subtype Type: int source_id# Source ID Type: int