monitor normalisation and error bars #40

New Issue

Closed

opened 2021-09-28 09:57:10 +02:00 by usov_i · 4 comments

usov_i commented 2021-09-28 09:57:10 +02:00 (Migrated from gitlab.psi.ch)

Copy Link

Copy Source

Created by: rsibille-psi

The error bars are not properly normalised in pyzebra it seems. For instance, I open dat file 6349 of experiment 20211272, the natural monitor is 6 millions. The plot produced by pyzebra is normalised to monitor 100000 with unrealistically large error bars (image 1), while if I impose the natural monitor to pyzebra the error bars look correct (image 2) and consistent with our old "fit" tool (image 3).


*Created by: rsibille-psi* The error bars are not properly normalised in pyzebra it seems. For instance, I open dat file 6349 of experiment 20211272, the natural monitor is 6 millions. The plot produced by pyzebra is normalised to monitor 100000 with unrealistically large error bars (image 1), while if I impose the natural monitor to pyzebra the error bars look correct (image 2) and consistent with our old "fit" tool (image 3). <img width="1229" alt="1" src="https://user-images.githubusercontent.com/62238853/135045671-1ae59ca2-4ae0-4ad8-8a7e-f5222473231a.png"> <img width="1237" alt="2" src="https://user-images.githubusercontent.com/62238853/135045675-0705226e-a604-47d8-bc9c-84ab4eb9e988.png"> 

usov_i commented 2021-09-28 11:53:59 +02:00 (Migrated from gitlab.psi.ch)

Copy Link

Copy Source

Created by: ivan-usov

Currently, the errors are calculated as sqrt(n), where n is the number of counts. The number of counts scales linearly to a monitor value. What would be the right way to scale errors in that case? I guess, sqrt(original_n) * monitor_scale?

*Created by: ivan-usov* Currently, the errors are calculated as `sqrt(n)`, where `n` is the number of counts. The number of counts scales linearly to a monitor value. What would be the right way to scale errors in that case? I guess, `sqrt(original_n) * monitor_scale`?

usov_i commented 2021-09-28 12:40:43 +02:00 (Migrated from gitlab.psi.ch)

Copy Link

Copy Source

Created by: rsibille-psi

yes, with monitor_scale the ratio between the original and new monitors.
thank you very much.

*Created by: rsibille-psi* yes, with monitor_scale the ratio between the original and new monitors. thank you very much.

usov_i commented 2021-09-29 16:54:07 +02:00 (Migrated from gitlab.psi.ch)

Copy Link

Copy Source

Created by: ivan-usov

let me know if it works, then I will update the main server too

*Created by: ivan-usov* let me know if it works, then I will update the main server too

usov_i commented 2021-09-29 19:24:17 +02:00 (Migrated from gitlab.psi.ch)

Copy Link

Copy Source

Created by: rsibille-psi

yes it does work properly I think.
Thank you!

From: Ivan Usov @.>
Reply-To: paulscherrerinstitute/pyzebra @.>
Date: Wednesday, 29 September 2021 at 16:54
To: paulscherrerinstitute/pyzebra @.>
Cc: "Sibille Romain Franck (PSI)" @.>, Author @.***>
Subject: Re: [paulscherrerinstitute/pyzebra] monitor normalisation and error bars (#40)

let me know if it works, then I will update the main server too

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHubhttps://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AO23BBPZDMSCDFA7DX7ULLLUEMSBTANCNFSM5E4YJF7Q.
[ { @.": "http://schema.org", @.": "EmailMessage", "potentialAction": { @.": "ViewAction", "target": "https://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480", "url": "https://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { @.": "Organization", "name": "GitHub", "url": "https://github.com" } } ]

*Created by: rsibille-psi* yes it does work properly I think. Thank you! From: Ivan Usov ***@***.***> Reply-To: paulscherrerinstitute/pyzebra ***@***.***> Date: Wednesday, 29 September 2021 at 16:54 To: paulscherrerinstitute/pyzebra ***@***.***> Cc: "Sibille Romain Franck (PSI)" ***@***.***>, Author ***@***.***> Subject: Re: [paulscherrerinstitute/pyzebra] monitor normalisation and error bars (#40) let me know if it works, then I will update the main server too — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<https://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AO23BBPZDMSCDFA7DX7ULLLUEMSBTANCNFSM5E4YJF7Q>. [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage", "potentialAction": { ***@***.***": "ViewAction", "target": "https://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480", "url": "https://github.com/paulscherrerinstitute/pyzebra/issues/40#issuecomment-930254480", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "https://github.com" } } ]

Sign in to join this conversation.

No Branch/Tag Specified

Branches Tags

main

0.7.12

0.7.11

0.7.10

0.7.9

0.7.8

0.7.7

0.7.6

0.7.5

0.7.4

0.7.3

0.7.2

0.7.1

0.7.0

0.6.5

0.6.4

0.6.3

0.6.2

0.6.1

0.6.0

0.5.2

0.5.1

0.5.0

0.4.0

0.3.2

0.3.1

0.3.0

0.2.2

0.2.1

0.2.0

0.1.3

0.1.2

0.1.1

0.1.0

Labels

Clear labels

bug

documentation

duplicate

enhancement

good first issue

help wanted

invalid

question

wontfix

No labels

Milestone

No items

No Milestone

Projects

Clear projects

No projects

Assignees

Clear assignees

sibille_r (sibille_r) usov_i (usov_i) zaharko (zaharko)

No Assignees

1 Participants

Notifications

Subscribe

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: zebra/pyzebra#40