NEID Data Reduction Pipeline: NEID-DRP

Welcome to the documentation for the NEID Data Reduction Pipeline. This pipeline was created and is maintained by the NEID Specsoft Team as part of the NEID project.

Contents:

• Overview of the NEID-DRP
  • Data Handling
  • Pipeline Runs
  • The NEID-SpecSoft Team
• NEID DRP Structure and Code
• Installation & Requirements
  • Source Code Access
  • Requirements and Installation
• NEID Data Format
  • Overview
  • Level 0 Data Format
  • Level 1 Data Format
  • Level 2 Data Format
• NEID Data Bitfields
  • Overview
  • DQLEVEL0
  • DOLEVEL1
  • DQLEVEL2
• NEID Calibrations
  • Overview
  • Operational Changes
  • Evening/Morning Cal. Sequence
  • Other Cals
• NEID Master Files
  • Overview
  • Master File Definitions
    • Target Information
    • Detector Information
    • Calibration Frame Validation
    • Flat Fielding and Scattered Light
    • Echellogram Definition
    • LDLS Fringe Correction
    • Exposure Meter
    • Wavelength Solution
    • System Throughput
    • Telluric Modeling
• NEID Pipeline Algorithms
  • Overview
  • CCD Image Processing
  • Flat field preparation
  • Scattered light correction
  • Spectral Extraction
    • Continuum Sources
    • Line Emission Sources
    • Cosmic Ray Rejection
    • Variance Correction
    • Final Units
    • Fallbacks
    • LDLS Fringe Correction
  • Wavelength Calibration
    • Wavelength Calibration Sources
    • Laser Frequency Comb Quality Control
    • Daily Wavelength Calibration
    • Within-session Drift Correction
    • Header Information
    • Fallback and Wavecal Quality
  • Barycentric Correction
    • Stellar barycentric corrections
    • Solar barycentric corrections
  • Telluric Model
    • Telluric Model Grid
    • Telluric Model Fitting Routine
    • Variable Line Spread Function
    • Telluric Model Header Information
  • Cross-Correlation based RVs
  • Cross-Correlation based Bisector Calculation
    • RV Header information
  • Stellar Activity Info
    • Calculation of the activity index
    • Activity Index Definition
    • Activity Table Description
    • Caveats
• NEID RV Eras
  • Overview
  • Example of RV Eras Across Observed Time Series
• NEID Data FAQ
  • Accessing Data:
    • Q: How do I give collaborators access to my data?
    • Q: Do I need an account to download public data from the website or PyNEID API?
    • Q: How can I retrieve a subset of solar data, selected by date range?
  • Data Processing:
    • Q: How quickly is data processed by NExScI?
  • Evaluating Data:
    • Q: In a series of RV observations for a target, one epoch is discrepant by tens of m/s. Why?
    • Q: Are NEID wavelengths in vacuum or air?
    • Q: How did the Contreras Fire on Kitt Peak affect NEID and NEID data?
    • Q: Should I fit for an offset between pre and post Contreras Fire data?
    • Q: Can I combine RV data processed with different NEID DRP versions (e.g. v1.2.1 with v1.3.0)?
  • Target Information:
    • Q: I am continuing to observe a target that was originally submitted in a previous semester. I have updated the target parameters (e.g. coords, spectral type, systemic RV, etc.) in the NOIRLab Q-Portal, but the pipeline is still using the old parameters. Why?
  • Time Accounting:
    • Q: Why do I see exposures in the NExScI archive that do not meet my SNR requirement?

Indices and tables

• Index

• Module Index

• Search Page