The tomography data files are in HDF5 format. HDF5 files have a tree structure of groups and datsets. While a great deal of meta data are saved in each file automatically by the scan engine, the locations of the most important parameters can be difficult to find. Below is a translation of parameters to their locations in the HDF5 file.
| Parameter | HDF5 location |
|---|---|
| Projection data | /exchange/data |
| Dark fields | /exchange/data_dark |
| Flat fields | /exchange/data_white |
| Angles | /exchange/theta |
| Magnification | /measurement/instrument/detection_system/objective/magnification |
| Pixel resolution | /measurement/instrument/detection_system/objective/resolution |
| Exposure time | /measurement/instrument/detector/exposure_time |
| Equal flat and data exposures? | /process/acquisition/flat_fields/different_flat_exposure |
| Flat exposure time | /process/acquisition/flat_fields/flat_exposure_time |
| Sample X location | /measurement/instrument/sample_motor_stack/setup/x |
| Sample Y location | /measurement/instrument/sample_motor_stack/setup/y |