Power utilization curve
The power utilization curve was a type of report which displayed the  efficiency of a weapon.

In 2153, Lieutenant Malcolm Reed and Alex tested and increased the power of a phase-pistol to be more effective against a Borg drone. Reed watched the curve while Alex increased the amount of megajoule. ()

A starship could be identified on sensors by its power utilization curve, as a vessel utilizing 100% power had the ability to skew sensor readings. ()
Reports