I have tried some flight tests with my RC fixed wing plane. Found my data to be more than expected. So to check i recorded my IMU data and compared with Phyphox (its a mobile app that can collect data using phones sensors - i found this to be working good)
At comparison it there is huge errors in imu readings.
I recorded both data in 50Hz - the %errors are as shown in image - The data was collected by taping the phone and pixxhawk and shaking it.
Am i doing something very wrong? or missing something that imu are reading huge erroneous values. I had compared the IMU0 and IMU1 data they match within 2% error.
What can i try out? Please someone help me out understanding this - Imu data is very important for me - what are the alternatives for data collection i should be looking for?