1. A method for optimizing event alerts in an information technology (IT) infrastructure management system, comprising: tracking, by a processor of an alert optimization system, one or more event alerts, triggered by monitoring tools, in the IT infrastructure management system; determining, by the processor, a probable usage for at least one configuration item associated with the one or more event alerts based on the tracking; determining, by the processor, a probable threshold value for each of the at least one configuration item based on the probable usage and capacity data; creating, by the processor, a mapping of at least one season to each of the at least one configuration item; computing, by the processor, a final threshold value for each of the at least one configuration item based on the probable threshold value, seasonality data, the mapping of the at least one season to each of the at least one configuration item, and semantic context data, wherein the final threshold value for each of the at least one configuration item is within a predefined feasibility range for the probable threshold value determined for each of the at least one configuration item, and wherein the predefined feasibility range associated with each of the at least one configuration item is determined based on maximum processing capacity and processing capacity currently utilized by a background program for an associated configuration item from the at least one configuration item; determining, by the processor, a time interval based on the number of event alerts generated in the past for the at least one configuration item, wherein the time interval is associated with the final threshold value based on the probable threshold value and the seasonality data; and optimizing, by the processor, the event alerts by filtering at least one unwanted event alert from the one or more event alerts based on the final threshold value and the time interval.