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EUI Data

Access

EUI data can also be accessed  through virtual observatories such as the Virtual Solar Observatory (VSO). In particular, EUI data  is available through the Solarnet Virtual Observatory (SVO) that offers flexible data access through a web client, an IDL client, a Python client and a RESTful API. Long term preservation of all EUI science data is guaranteed at the Solar Orbiter Archive (SOAR). 

Terms of Use

The EUI data are public and can be freely downloaded from the resources linked above. All data users are asked to read the latest release notes and cite it's DOI landing page through the latex/bibtex bibitems suggested in the release notes. The acknowledgment for the use of EUI data is also listed on this DOI landing page. 

Links to the DOI landing pages of previous data releases can be found in the full history of previous EUI data releases linked above. 

Description

The following documents describe the EUI data products and their metadata.

The EUI consortium is committed to a maximally open data policy meaning that all data products, low latency data products, the calibration software and science user documentation will be made available as soon as possible and as broadly as possible. This implies specifically that the EUI consortium will not exercise the right foreseen in the Solar Orbiter Management Plan (Solar Orbiter 2012) to retain the data private during 3 months after the receipt of the original telemetry for the purpose of calibration and verification. Instead, the EUI data products will be distributed as soon as is technically possible with the best known calibration at the time of production.

The full EUI data archive will be reprocessed on a regular basis to apply the continuously improving instrument understanding and calibration optimisation. Each such reprocessing will be distributed as a new release of the data. Each release contains Level 1  (L1, uncalibrated images), Level 2 (L2, calibrated images) and Level 3 (L3, JP2000 visualisation product) data. General science users are encouraged to use the L2 images from the latest release. L1 images are only relevant for data users who wish to study the calibration process. L3 images are intended to be viewed through jHelioviewer. Typically only L2 data will be upgraded in a new release. L0 data will never change by definition. L1 data will only be upgraded if the metadata content is changing. L3 data will only upgrade if the changes imply a visually perceptible change. Previous versions of the data, corresponding to old releases, will continue to be available for reproducibility of past research.

Software

We recommend using the following analysis software:

A tutorial is available in the form of these Jupyter notebooks that show how to display and work with EUI data using SunPy.