Memos
Catalog Requirements
Catalog Characterization
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
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
- Determining the Astrometric Error in CSC Source Positions
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
Temporal Properties
Master Pipeline
- Chandra Source Catalog Merge Pipeline Specification
-
Combining Error
Ellipses (updated 2011) (based on Naval Postgraduate School
Master's thesis
"Single Source Error Ellipse Combination")
The original Davis 2007 version of this memo is also available.
Quality Assurance