Accelerometer data -- loss of data between periods -- does anyone know approximately have much time is lost between periods?

Hello Everyone,

I hope you are doing well.

I am making an app that just collects accelerometer data for longer time periods (approximately 24hr). I have set the data logger to save data at 25Hz for periods of 4 seconds (Max period time). With any cycle pattern, I know that systems tend to have a "lag time" before a new period in order to save the data collected before continuing onward. I was wondering if anyone knew the approximate time of the "lag" between periods of actively collecting accelerometer data.

I tried running my own experiment with a 4hr long activity, hoping I could calculate the "lag time" myself; however, timestamps are shown to be untrustworthy because the same timestamp was seen for all of the accelerometer data in the 4 hr frame.

Thank you for all your help in advance.