The Flight Replay feature in Tyto Robotics software is a great way to study the drone propulsion system's performance at different stages of your flight.
It's as simple as downloading your flight controller data from a recent flight and uploading it into the Flight Stand software. Attaching your motor and propeller to the thrust stand and clicking 'Execute sequence'.
The software will take your propulsion system through your throttle points and provide you with thrust, torque, RPM, power and efficiency data for your whole flight, with a 1,000 Hz sampling rate.
This video shows flight controller data, provided by Robin and his team at the North Australia Centre for Autonomous Systems (NACAS).