Time-of-flight events A list of time of flight for each event as it comes in. This list is for all pulses with information to attach to a particular pulse located in events_per_pulse. There will be extra information in the NXdetector to convert pixel_number to detector_number. This list is for all pulses with information to attach to a particular pulse located in events_per_pulse. The time that each pulse started with respect to the offset ISO8601 This connects the index "i" to the index "j". The jth element is the number of events in "i" that occurred during the jth pulse. If voltages from the ends of the detector are read out this is where they go. This list is for all events with information to attach to a particular pulse height. The information to attach to a particular pulse is located in events_per_pulse.