[Dsg-rich] question about richmon plots

[Tyler Lemon]

Hello Andrey and Valery, 

I've been looking at the plots generated by richmon and have some questions. 

1.) For the TDC plot, what are the axes? Is x-axis a time and y-axis a frequency? 

2.) For the TDC plot, I saw a logbook entry saying black was the leading edge and red was the trailing edge. What is meant by leading edge and trailing edge? 

3.) For the multiplicity plot, is it correct to say that it is a histogram where the x-axis is number of hits, y-axis is frequency, and the items binned are events? For example, if there is an event with 10 hits, it would be counted in the bin corresponding to 10 hits. 

4.) What is classified as a hit? Is it an event measured by a pixel or by a PMT? For example, if an event shows only one PMT had three pixels hit, is it counted as three hits for the number of pixels or one hit for the number of PMTs? 

Also is there a document that describes what the settings mean on the occupancy plot tab? Would there be anything like this on the RICH wiki? 

Thanks for your help. 

Best regards, 
Tyler 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-rich/attachments/20180228/bcb960ef/attachment.html>