Currently there is no way to know if Analytics missed important updates (e.g. start of a batch) without analyzing the message logs.
However, the AFSDK does provide an indication on the DataPipe if the pipe is in an overflow state, allowing for a consumer to detect if updates have been lost.
I would like AF Analytics to include a Performance Counter that indicates the UpdateQueue size and/or an indication of lost Events. That allows to monitor if any important data is potentially missed by Analytics.