Example for meta data and automatic filtering

[SimonHeybrock]

Some meta data will cause automatic filtering, e.g., there could be a pulse-bad flag, for a soft veto. The reduction should then automatically drop those frames.

• Streamer could generate the flag and inject some bad pulses, e.g., just a random flat neutron distribution.
• If the reduction does not filter, it will see a background. Filtering (dropping frames where pulse-bad=true) should get rid of the background. If the flag is available right when the frame is processed, dropping it should be simple.

Questions:

• Are there cases where we want to filter out parts of a frame?
• Can we drop things before running the reduction, or could it happen that the meta data arrives too late?
• Should dropping happen before distributing the stream?