20220719 14470200 1.0 TRUE Crime Severity Index The Crime Severity Index (CSI) measures changes in the level of severity of crime in Canada from year to year. In the index, all crimes are assigned a weight based on their seriousness. The level of seriousness is based on actual sentences handed down by the courts in all provinces and territories. A CSI is calculated by dividing the number of reported crimes by the total population; the result is multiplied by 100,000.