Implement Gamma Plotting per CAS Software Requirements (Sections 2.5.1 & 2.5.2)

[tyronechrisharris]

Description

Implement gamma data plotting functionality as specified in Sections 2.5.1 and 2.5.2 of the SLD_CAS Software Graphing Requirements_R1.0(2010-09).pdf

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📈 Requirements Summary

Gamma Data Plotting (Section 2.5.1)

• Sampling rate: Plot a new gamma data point every 200ms.
• Initial burst: First plotted point is derived from the burst of 5 gamma messages at occupancy start. Plot only the most recent (γt); the previous 4 are used in rolling sum.
• Expert View: For each detector panel, gamma counts (Sd) = sum of current + previous 4 samples (5-sample rolling window).
• Standard View: Total gamma counts (Stotal) = sum of all Sd.

Gamma Sigma:

• σγ = sqrt(B) where B is the background.
• Plot in sigma units using:
  • Expert: Gσ = (Sd - Bd) / sqrt(Bd)
  • Standard: Gσ = (Stotal - Btotal) / sqrt(Btotal)
• Negative values must be plotted as-is.

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Gamma Background (Section 2.5.2)

• Expert View: Background Bd = field from last GB message before occupancy.
• Standard View: Btotal = ∑Bd from all panels.
• Background shown as dashed horizontal line, not interfering with data traces.
• In Sigma mode, background = 0.

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✅ Deliverables

• Gamma plotting logic for:
  • Expert view
  • Standard view
• Y-axis toggle: Counts or Sigma
• Background marker overlay
• Solid line for data, dashed for background
• Test coverage for:
  • Rolling sum calculations
  • Sigma transformations
  • Background retrieval from GB message

[earocorn]

Can you confirm that the plots conform to the software requirements?