CMU’s career survey for physics is at https://www.cmu.edu/career/salaries-and-destinations/2015-survey/pdfs-one-pagers/2014-2015%20Physics%20Post-Graduation%20Destination%20Data_August%202015.pdf . UCB’s is at https://career.berkeley.edu/sites/default/files/pdf/Survey/2015Physics.pdf .
You may want to ask other PhD granting physics departments of interest what they think of CMU as an undergraduate source for physics PhD students and hope they answer.