KPI-What is a 'Cleaned' metric?

Mar 27, 2026

Example of cleaned metric:

Raw: Example of sensor/s with no modifications applied.

Cleaned: KPIs that are filtered by On/Off signals as per the train’s operational status. The cleaned KPIs will reflect the sensors’ corresponding data when the train is ON and will “clean” the sensors’ data when the train is OFF. Either one will be applicable depending on the property of the sensor:

Data will be filled with the value ‘0’ whenever the train is OFF. This is mainly used for flowrates and pump speed sensors. These KPIs can sometimes be referred to as “Offline Masked” KPIs.

The data drops the value when the train is OFF, retaining the latest value when the train was ON. Therefore, instead of dropping to a value of ‘0’ (OFF status), it will retain the last value when the train was ON until it receives a new value from the sensor (once is back ON). These KPIs can sometimes be referred to as “Online Only” KPIs.

NOTE: Zero-filled KPIs are mainly used for pump speed and flowrates because when there is no production (train status is OFF), these assets are not being utilized. Therefore, we would drop the value to zero instead of retaining the last value of the sensor/s. For other properties such as pressure, conductivity, temperature, etc., it is more appropriate to use non-zero-filled KPI.