_Issue [RCAL-1370](https://jira.stsci.edu/browse/RCAL-1370) was created on JIRA by [Paul Huwe](https://jira.stsci.edu/secure/ViewProfile.jspa?name=phuwe):_ Create Datamodel for Exposure Time Calculator reference files.
Issue RCAL-1370 was created on JIRA by Paul Huwe:
Create Datamodel for Exposure Time Calculator reference files.