Field Definitions are Available Here
Granule
string (80)
The file format of the raw data (such as HDF) for this granule.
HDF
/DataFormat
/gmi:MI_Metadata/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributionFormat/gmd:MD_Format/gmd:name
Identification Information (ECHO)