... Reference Data for Calibration and Tools . ... File Structure . ... Synphot Files . ... Delivery of Reference Files . ... 1-Name of deliverer: (other e-mail addresses) 2-Date of delivery: 3-Instrument: 4-Type of file (bias,pht,etc.) ... If the delivery of the file was made because there was an issue with the header (e.g. a keyword missing), but no change to the data, this information should be conveyed in this section, so we know that even the file was delivered, the science data will not change. ...