Masked bins are not accounted for in DiffractionFocussing for event workspaces

[martyngigg]

This issue was originally TRAC 4045

From MantidHelp:

I am trying to remove the WISH prompt pulse with the MaskBins algorithm using both event nxs file and raw file generated from the event nxs one (a python script with the history is in the attachment). Surprisingly, the MaskBins algorithm works differently for the nxs and raw files (see the attached screenshot with the plotted result). Do you have an idea why it is like that? and how to improve the prompt pulse removing in the case of event nxs files?

The problem is that for event workspaces the events are physically removed but not kept track of so that the normalization in DiffractionFocussing is too high. See attached plot and script.

[martyngigg]

Russell Taylor (2011-11-02T18:49:24):
Kind of related to this, it looks to me as though masked ''detectors'' are not accounted for when calculating the normalizing weight when you have a Workspace2D (they are for events).

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@NickDraper (2012-01-09T09:43:12):
Moved to iteration 33 at iteration 32 code freeze

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@NickDraper (2012-04-30T14:12:26):
Moved at end of release 2.1

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@NickDraper (2012-08-10T12:43:30):
Moved at the end of release 2.2

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@NickDraper (2012-10-28T11:38:43):
Moved to milestone 2.4

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@NickDraper (2013-04-29T09:49:35):
Moved to r2.6 at the end of r2.5

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@NickDraper (2013-07-26T13:54:58):
Moved to backlog at the code freeze for R2.6

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@NickDraper (2014-02-14T11:04:55):
Bulk move to assigned at the introduction of the triage step

[martyngigg]

http://trac.mantidproject.org/mantid/raw-attachment/ticket/4045/Prompt_pulse_rem.py
(uploaded by @martyngigg on 2011-11-02T15:55:16)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/4045/WISH_prompt_pul.png

(uploaded by @martyngigg on 2011-11-02T15:55:25)

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