Figure 7. PADME flow diagram.VADERVADER operates on observational data such as the brightness magnitudes, coupled with the angular positions of the detected objects and the background stars. The VADER portion of O2DPA consists of several algorithms to provide both validation and exploitation of radiometry as shown in Fig. 8. Level B (validation) first checks the radiometric calibration and assigns an estimated systematic error, and then compares the current data to an empirical model created from past and concurrent data to assign each data point a score. The score and systematic error are then used to filter the data processed by the Level C (exploitation) algorithms.