I am trying to create an exercise for one of my classes using CMS Open Data. I tried to look at some data and MC samples, but I cannot find the information about cross sections and luminosities. For instance, for this data sample  and this MC sample . Is there an easy way to know this?
As a suggestion, for data maybe it would be easy to know the luminosity per txt file. In that sense I can only process a few txt files and normalized my MC samples to that subset of the total dataset.
Thanks a lot for the help