Flight Data Analysis and Good Flight

How can we describe good flight according to flight dataflash log? What is the first step of analysis? What is the definition of good flight? Can anybody guide me about this topic.

Thanks for help

basically a log file without error but other this are important like low vibration, low change in mag , low HDOP, enough thrust and …

here is the downloading and analyzing data logs guide

also here is Diagnosing problems using Logs

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Thanks for answer

but i wonder and want to know, how can mission planner say compass is good? What is the range of low change in mag.

I am newbie, sorry for question level :slight_smile: