scipp / scipp/ess

Use exposure time for normalization

Open
#43 13 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

essimaging
Dominant language
Python
Stars
1
Forks
3
Avg merge
2d 11h
Merged PRs (30d)
17

Description

For now, white beam, histogram mode detector data doesn't come with shutter-speed(exposure time).

Per measurement (per file) it doesn't change, but it can vary in different files.

The current normalization method doesn't take it into account.

Update From ECDC
ECDC will add this field as a NXlog and it'll be somewhere under the detector group such as /orca/acquire_time

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the normalization entry point and inspecting how detector data is read from the detector group, including the proposed /orca/acquire_time NXlog field. Confirm how exposure time varies between files and consider the normalization behavior needed so files with different exposure times are comparable.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.