Ticket #3088 (closed: worksforme)

Opened 9 years ago

Last modified 5 years ago

Large oscillations in I(Q) plots when the count statistics are low

Reported by: Steve Williams Owned by: Steve Williams
Priority: major Milestone: Iteration 29
Component: Mantid Keywords:
Cc: Blocked By:
Blocking: Tester: Martyn Gigg

Description

This is mainly affecting can runs (see below for a run number) when reduced over a large wavelength range there are oscillations in I(Q) many errorbars in size. The plot should be a smooth curve to within th errorbars. I'll post more run details below

Attachments

MASKSANS2D_111N_4m_Penfold_to_16p5.txt​ (1.5 KB) - added by Steve Williams 9 years ago.
File to go in the User file: box for testing

Change History

comment:1 Changed 9 years ago by Steve Williams

  • Status changed from new to accepted

Select SANS2D and set the following run to 7210 L/WAV 1.75 14.0

Is less nosy than

L/WAV 1.75 16.5

However, the last run has more data and so should be smoother! the user file is attached

Changed 9 years ago by Steve Williams

File to go in the User file: box for testing

comment:2 Changed 9 years ago by Nick Draper

  • Milestone changed from Iteration 29 to Iteration 30

Accepted and assigned tickets moved at iteration 29 code freeze

comment:3 Changed 9 years ago by Steve Williams

  • Status changed from accepted to verify
  • Resolution set to worksforme

I believe this was fixed in ticket #3105

comment:4 Changed 9 years ago by Nick Draper

  • Milestone changed from Iteration 30 to Iteration 29

comment:5 Changed 9 years ago by Martyn Gigg

  • Status changed from verify to verifying
  • Tester set to Martyn Gigg

Verified that the large oscillations don't seem to appear.

comment:6 Changed 9 years ago by Martyn Gigg

  • Status changed from verifying to closed

comment:7 Changed 5 years ago by Stuart Campbell

This ticket has been transferred to github issue ​3935

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