This is not available, however, in the recorded data, the lost packages appear as a flat line on all channels. This is because our software repeats the last sample until it gets the next valid sample. So, data will not be desynchronized even if the package loss occurs).
In that sense, in the processing of data you can find how many packages were lost (1 package is 1 sample).
This is not to be confused with individual flat channels, that have to do with bad electrode connection on the scalp.