This is only available in CP version 3.1 and above.
Login to CP, navigate to "CDN Resource". Click on one of the cdn resource, and click "advance reporting" tab.
There are 2 sessions under "advance reporting", which is:
(A) Bandwidth Statistic
Graph Bandwidth Statistic- This show the bandwidth statistic of the CDN resource for specific period, with breakdown of cached and non-cached.
Graph Cache Utilization - This show the total http request to the CDN resource for specific period, with breakdown of cached request and non-cached request
(B) Status Code
This session shows the total http request which return to respective HTTP status code (2xx,3xx,4xx,5xx) for specific period.