Embodiments are directed to managing visualizations. Visualizations based on data from a data source may be provided. Assessment models based on the visualizations may be provided such that the assessment models may detect mirages in the visualizations. Assessment models may be employed to determine Assessment results based on the visualizations and the data from the data source such that each assessment result includes an assessment score that corresponds to a detection of mirages. Assessment results may be rank ordered based on the assessment score. A report may be provided that includes the rank ordered list of the assessment results.