diff --git a/dials_data/definitions/dtpb_serial_processed.yml b/dials_data/definitions/dtpb_serial_processed.yml
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+name: xia2.ssx output of processing a DtpB SSX data set from VMXi
+author: James Beilsten-Edmands (2022)
+license: CC-BY 4.0
+description: >
+  Processed data from DtpB taken on VMXi beamline at Diamond Light
+  Source in Feb 2022, visit nt30330-15, courtesy of Mike Hough and James Sandy.
+
+  The integrated files were generated from xia2.ssx processing of grid
+  scans on two wells of dye-type peroxidase (DtpB). The files were generated
+  with dials version 3.12.0, as described in the entry in dials/data-files.
+  
+
+data:
+  - url: https://github.com/dials/data-files/raw/3849a695d7a136d6e93584ccefc17ef59de8c815/ssx_DtpB_test_data/well39_batch12_integrated.expt
+  - url: https://github.com/dials/data-files/raw/3849a695d7a136d6e93584ccefc17ef59de8c815/ssx_DtpB_test_data/well39_batch12_integrated.refl
+  - url: https://github.com/dials/data-files/raw/3849a695d7a136d6e93584ccefc17ef59de8c815/ssx_DtpB_test_data/well42_batch6_integrated.expt
+  - url: https://github.com/dials/data-files/raw/3849a695d7a136d6e93584ccefc17ef59de8c815/ssx_DtpB_test_data/well42_batch6_integrated.refl