I don't know about the pain chart but this sleep:pain cycle is a vicious one; pain can disrupt sleep which in turn causes more pain - which disrupts sleep further - and, of course, causes more pain; its a vicious cycle. Check out the URLbelow about the sleep pain problem http://www.sleepfoundation.org/site/c.huIXKjM0IxF/b.2422621/k.8B2A/Pain_and_Sleep.htm
They talk about sleep hygiene (http://www.umm.edu/sleep/sleep_hyg.htm) I don't know if you've tried that but relaxation exercises before sleep can help you attain deeper and more restful sleep. If you're looking for alternative methods of fighting pain I recommend John Kabat Zinn's book "Full Catastrophe Living".
Good luck.