Understanding Plots from Ab-initio job

Hi Everyone, Could you please help me understand what these plots about noise model mean in the Ab-initio job?
What are sigma and error? Is there any documentation I could go through to understand all the output plots in the job?

@admins

Dear @Ashwin-Dhakal,

Thanks for the inquiry. We are in the process of compiling documentation to better explain the various plots in CryoSPARC. In the interim, please find this previous forum post explaining the sigma/noise plots in ab-initio (and refinement): Noise model plot meaning - #2 by mmclean

Best,
Michael