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DeliverableRequirement
Uplink/Downlink needsDefine the maximum data rate and latency requirements for both uplink (command) and downlink (payload/telemetry) data.
Defining which ground station will receive dataDefine the Ground Station Network (GSN) and specific contact schedules or handoff criteria for reliable data downlink.
Defining what will be downlinkedSpecify the complete Data Product List, including priority levels for payload data, telemetry, and health packets.
On board processingThe onboard computer shall be capable of processing payload data according to the defined algorithm (e.g., compression, feature extraction).
Toss out unreasonable data before it's processed / basic filtering on dataImplement a Data Quality Filter (DQF) to identify and discard or flag out-of-range, non-physical, or corrupted sensor readings prior to storage or transmission.
data informs other parts of satellite (controls)Define the cross-subsystem data interface for using sensor/telemetry data (e.g., temperature) to trigger or inform actions in other systems (e.g., activating cooling/spinning).
Appropriate Sensor Suite / Data must be correctly relayed from sensorsData acquisition system shall implement measures (e.g., Cyclic Redundancy Check CRC) to ensure the integrity and correctness of data relayed from the sensors to the onboard processor.
Encryption method / data must be encryptedAll downlink data (payload and critical telemetry) shall be secured using a defined encryption standard (e.g., AES-256) with approved key management protocols.Anti-spoofing/general security measuresThe Command & Data Handling (C&DH) system shall implement authentication protocols (e.g., authenticated header) to verify the source of all uplink commands (anti-spoofing).
Send out NaN type data when compromise is detectedUpon detection of a security breach or data integrity failure, the system shall autonomously transition to a defined secure mode and flag all outgoing data packets with a security alert status code (e.g., an error flag or 'NaN' equivalent).
Shall send
at least one health packet per orbit / Sends health packets after every
necessary packets per orbitThe data management system shall generate and downlink a System Health Packet (SHP) containing critical subsystem telemetry at least once per orbit + at least one science packet per orbit + at least one operational packet per orbit. 
Relay data collection mode if it changedThe SHP shall include the current Payload Operational Mode (e.g., Priority Collection, Low-Power Standby, Baseline Scan).
data storage?Define the minimum onboard data storage capacity (e.g.,
$X$ GB
X GB) and the maximum data retention time before automated deletion.