regarding .mseed et al.

Hi Folks

I am working on an opensource Infrasound monitor using a digital mems pressure sensor ( These are read at ~ 40Hz via i2c using a python program running on a raspberry pi.

Occasionally I experience a read failure from the sensor- meaning that the traces from two rigs will diverge by a couple of minutes during the 24 hours of a complete plot.

I have read up on mseed and it appears that only the start and stop times may be recorded. Is there a way to either record more timestamps (eg. hourly) or can you recommend another data format. I don't want to place a timestamp in every read as the datafile size would become too large. I would prefer not to have to save files hourly i.e. 24 per day though that is one possible solution.