This case (of the Klyuchevskoy volcanic ash plume) shows images from the first posted files from AHI. The data were generated by JMA.
The date is from 02:30 UTC on 25 January 2015. The values on the interactive graph are approximate. The images were generated in McIDAS-X.
More information on the CIMSS Satellite blog.
Thanks to the JMA for the data.