Memos
Catalog Requirements
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
- Determining X-ray Source Intensity and Confidence Bounds in Crowded Fields
Spectral Properties
Temporal Properties
- Effectiveness of the Gregory-Loredo Algorithm for Detecting Temporal Variability in Chandra Data
- Background Filtering for Release 2 of the Chandra Source Catalog
- Preliminary Assessment of Dither Corrections for L3 Lightcurves
Astrometry
Catalog Pipeline Specifications & Technical Reports
Observation Calibration
Background Determination and Source Detection
- Constructing Background Images using Voronoi Tessellation
- MCMC Samples
- ACIS False Source Likelihood Thresholds
- HRC False Source Likelihood Thresholds
- Revision to the MLE Algorithm for CSC Source Fitting
Detection Position and Extent
- Tying CSC Astrometry to the Gaia Reference Frame. Translation-only Approach
- Measuring Detected Source Extent Using Mexican-Hat Optimization
- Estimating Intrinsic Source Size
Merging Detections to Master Sources
- Chandra Source Catalog Merge Pipeline Specification
- Combining Error Ellipses
- Determining the Astrometric Error in CSC2 Source Positions
Aperture Photometry and Limiting Sensitivity
- Aperture Photometry Specifications for CSC2
- Specifications for Combining Data from Multiple ObsIDs in Aperture Photometry
- Grouping ObsIDs into Bayesian Blocks on the Basis of Flux
- An Improved Method for MCMC Sampling in CSC 2 Aperture Photometry
- Implementing pymc3 in CSC 2.1 Aperture Photometry
- Limiting Sensitivity Specifications for CSC2
Spectral and Temporal Properties
- Chandra Source Catalog (CAT2) Spectra and Spectral Fitting Specifications
- Specifications for Including the APEC Model in CSC 2.1
- Specifications for Chandra Source Catalog Release 2: Variability Flags and Hardness Ratios
- Adding Dither Corrections to L3 Lightcurves
Quality Assurance