Could tell me the best way to make the input data?

[seongsimyoon]

I read your papers and I'm interested in QPF using deep-learing.
I hope to use this QPF model for my research.
I ran nowcasting/hko_iterator.py and I'mstudying source code.
To be honest, I'm not used to Python, so it's very difficult to understand the source code.
In particular, it is difficult to read and understand the valid_datetime.pkl file.
Could you explain about that file?

In fact, I am having the biggest difficulty in making up the input data for application to Korea. The radar data I use to apply is an ascii format file(301x301 grid size, time interval 10 minutes), not an image file.
Do I need to convert it to an image file (png) file?
If you don't mind, could tell me the best way to make the input data?
I will waiting for your help.
Thank you.

[seongsimyoon]

I read the valid_datetime.pkl file as below.
frozenset({datetime.datetime(2012, 8, 12, 8, 54), datetime.datetime(2012, 9, 24, 5, 48), datetime.datetime(2011, 1, 5, 0, 48).....})

Is this right?