A method for determining a convolved peak intensity in a sample trace includes ejecting a plurality of sample ejections from a sample well plate. An ejection time log is generated which includes an ejection time of each of the plurality of sample ejections from the sample well plate. The plurality of sample ejections is analyzed with a mass analyzer. The sample trace of intensity versus time values is produced for the plurality of sample ejections based on the analysis. A known peak shape is obtained. A convolved peak intensity is determined for a convolved peak of the sample trace based at least in part on the known peak shape and the ejection time log.