Authenticity - Advanced Digital Preservation - page 231

This data, for the UK and common programmes, is downloaded to the STFC archive
from the Kiruna web server and stored in a directory structure having one top-level
directory per year with file names consisting of the experiment name performed and
a timestamp.
As stated, this case study aims to capture processing information about the inte-
gration analysis performed, how it was done, whether a filter was used to detect
anomalies, the integration strategy, the analysis strategy and detail the software used.
It is also important to capture human information about who performed the analysis,
when, where and provide a trail of the origin of analysed files. Capturing the neces-
sary PDI fields for the EISCAT data follows the same process as for the WDC case
study. Through a thorough examination and discussion with the EISCAT archivist
stationed at STFC, four key events were identified.

13.7.6.2.1 The Events and the Capture Criteria

1. Receive and ingest raw data from the Kiruna archive - “In order for this
digital data to be accepted as EISCAT data of sufficient quality the reliability of
its source must be verified and the format of the received data must be recorded”
2. Perform data storage - “The storage of data in a directory name matching
<experiment_name>@<site>/yyyymmdd_hh will be checked and verified for
consistency”

Table 13.2 Events for each step - EISCAT example

Protocol/event Step to record Explanation

Receive and ingest raw data
from the Kiruna archive

Source of dataset Capture evidence that this is

indeed the source

Checksum information Record checksum

information about
received files

Archivist name and details Capture credentials of

archivist

Perform data storage Directory structure Capture details of the

directory structure

Matlab file name
convention

Record consistency with the
file-naming convention

Check file contents for
consistency

Detail file parameters Capture details of the

required file parameters

Compare with observation
details

Data parameters should be
consistent with the
observation, the date, the
site and the experiment
name

Perform integration and analysis Data integration Detail the integration

performed

Data analysis strategy Detail the analysis strategy

used