# mags/grads in CTF data

**URL:** <https://mne.discourse.group/t/mags-grads-in-ctf-data/10351>\
**Category:** Support & Discussions\
**Tags:** meg\
**Created:** [October 8, 2024, 10:35am UTC](https://mne.discourse.group/t/mags-grads-in-ctf-data/10351 "2024-10-08T10:35:06Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![contsili](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/contsili/32/3932_2.png) [@contsili](https://mne.discourse.group/u/contsili)\
**Post date:** [October 8, 2024, 2:00pm UTC](https://mne.discourse.group/t/mags-grads-in-ctf-data/10351/2 "2024-10-08T14:00:49Z")

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Well spotted! I also have the same issue with my CTF data.

This bug seems to date back to 2019 (see  
[(1)](https://mne.discourse.group/t/a-bug-in-pick-types-function-for-ctf-dataset/1950) and [(2)](https://mne.discourse.group/t/a-bug-in-pick-types-function-for-ctf-dataset/1951)) and has not been fixed.

I’m not sure if this will cause problems later in your pipeline. In the past, problems with [computing the adjacency matrix for cluster analysis](https://mne.discourse.group/t/wrong-meg-channel/4709/10) have been reported.

You can manually change the channels from mag to grad. Here’s a helpful suggestion: [wrong meg channel - #4 by mscheltienne](https://mne.discourse.group/t/wrong-meg-channel/4709/4)

It might be worth filing an issue on GitHub, so this gets fixed. From a quick look, I did not find any issue filed regarding this topic.

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