Memos

Catalog Requirements

• Chandra Source Catalog Requirements

Catalog Characterization

• Statistical Characterization of the Chandra Source Catalog, Release 1

Science Studies

• Aperture Photometry and Limiting Sensitivity
  • Chandra Source Catalog Energy Bands
  • Optimum Soft Energy Band Boundaries for Super-Soft Sources
  • Pile-up Fractions and Count Rates
  • Background Marginalized X-ray Source Intensity
  • CSC Release 1: Missing sources in crowded fields
• Spectral Properties
  • Default Spectral Fit Parameters for the Chandra Source Catalog
  • BEHR-lite
• Temporal Properties
  • Effectiveness of the Gregory-Loredo Algorithm for Detecting Temporal Variability in Chandra Data
  • Thoughts on Filtering Flares in L3 Background Files
  • Preliminary Assessment of Dither Corrections for L3 Lightcurves

Specifications

• Source Position and Extent
  • Recommendations for Estimating L3 Source Position Uncertainties
  • Measuring Detected Source Extent Using Mexican-Hat Optimization
  • Estimating Intrinsic Source Size
• Aperture Photometry and Limiting Sensitivity
  • Computing Flux and Flux Significance
  • Revised Specifications for Computing Aperture Photometry Quantities
  • Avoiding Numerical Instabilities in Computing Aperture Fluxes
  • Computing L3 Limiting Sensitivity Maps
• Spectral Properties
  • Computation of Hardness Ratios Using BEHR
• Temporal Properties
  • Removing Background Flares
  • Adding Dither Corrections to L3 Lightcurves
• Master Pipeline
  • Chandra Source Catalog Merge Pipeline Specification
  • Combining Error Ellipses (based on Naval Postgraduate School Master's thesis
    "Single Source Error Ellipse Combination")
• Quality Assurance
  • Chandra Source Catalog Quality Assurance Specifications
  • A Statistic for a Crater Detection Algorithm