Sierra can't do proper tick charts because it stores its data in 1 min blocks. You can do 'sort of tick charts' if the number of ticks required for one bar take more than a minute to accumulate!
Apparently it is planned to change the storage format to 30 second chucks to improve the granularity of such charts, but they still wont be 100% accurate as you would find with something like eSignal.
H.