What are the units of measurement in MODIS products?


I’m trying to analyze some MODIS data, specifically from the Terra sensor. I’m having an incredibly hard time figuring out units of measurement.

When opening the subfolder “Bands” in the product explorer I find two subdirectories: Reflective Solar Bands and Emissive bands. When comparing any two images with the Pixel Info Tool I have a hard time understanding the units of measurement, since in the units field the measurement is “none”.

I read on the MODIS website, and I seem to understand that they are “simple” solar radiances. Could anybody please confirm that the value that I see in “Bands” in the Pixel info tool (or the one that I see plotted if I go through Menu/Analysis/Histogram) are radiances (or radiances falling in a certain bin)?

Thank you very much in advance.