CMS Web-Based Monitoring (WBM):

• https://cmswbm.cern.ch/cmsdb/servlet/FillReport?FILL=7324 (particular Fill)
• https://cmswbm.cern.ch/cmsdb/servlet/RunSummary?RUN=281707 (particular Run)

You can also find trigger rate vs. PU plots:

• https://cmswbm.cern.ch/rateplots/7324/MoreTriggers/png/L1_SingleMu22_EMTF.png

Update: WBM has been succeeded by OMS (Online Monitoring System):

• https://cmsoms.cern.ch/

If needed, you can still access the offline edition of WBM:

• https://cmswbmoff.web.cern.ch/cmswbmoff/