https://moosh.im/wiki/index.php/LED_Blink_Patterns

But if your device had crashed, those blinks may just be some death cramps.

I dont have patience to log anything that long and even a day with sampling every second gives one metric shitload of data.. If there is something fast happening, it could be seen in few hours and most times long term stuff would appear just nicely in logs at longer sampling intervals. And there would still be huge amounts of datapoints.

What are you planning to use for visualizing that much data? Excel? And is there something to see in that much detail?