Last modified: 07/22/26

• SYSHELP Contact Info
• ACIS Operations Scientist On Leave Schedule
• Team Contact Info

• ACIS Emergency Procedures Page
• ACIS Ops Memos
• Memos Webpage
• ACIS Anomaly Documentation
• ACIS Load Review texts
• Current ACIS Load Real-Time
• ECS Cold Time Tracking
  
• ACIS FP Cooling Tests
• Blank ER(Engineering Request) form [doc| pdf]
• ACIS Documentation(local access)
• SI Mode Finder
• SACGS Documentation
• pySACGS
• ACIS Ops/SOTMP Prelim OR Communication Procedures [pdf]
• ACIS Ops Twiki
• ACISpy
• ACISpy Command Line Tools

ORBITS and ATTITUDES - Programs, Tools, Links and Definitions of Chandra Orbits
1. Quaternion Tools: Obtaining, Completing, Calculating Pitch, Roll and ONR, reading FOT requests, and a class you can use.
2. Orbit Event Files (*.orp) - Reading, Calculating OORMPDS and OORMPEN, and a class you can use.
3. Preliminary Schedule Check Plots
• ACIS Training Pages


• Chandra Spacecraft Documentation Pages


• Change Control Procedure Documents


• TWG, MPCWG, FDB Presentations

• How To Operate the Non-Load Event Tracking GUI
  


• When To Use the Non-Load Event Tracking GUI (Under Construction)
  


• How To Get A Load History
    Which loads ran? What was the load sequence? What kind of load were they (Normal? SCS-107?)? What was the interrupt time(s)?

ACIS Thermal

• WEEKLY THERMAL PLOTS
  
  • Weekly Plots of PSMC Thermal Predictions
  • Weekly Plots of DPA Thermal Predictions
  • Weekly Plots of DEA Thermal Predictions
  • Weekly Plots of Focal Plane Thermal Predictions
  • Weekly Plots of FEP1 Mongoose Thermal Predictions
  • Weekly Plots of FEP1 Actel Predictions
  • Weekly Plots of BEP PCB Thermal Predictions
  • Weekly Plots of 1DPAMYT Thermal Predictions
  
  
  • Weekly Plots of BackGround Counts and FP Temps
  • Weekly Plots of 1DPAMYT 1DPAMZT 1DEAMZT 1PDEAAT
  • Weekly Plots of BEP, FEP0 and FEP1 Temps
  
  
• FP_TEMP Model Quantile Error Plots
• 1DEAMZT Model Quantile Error Plots
• 1DPAMZT Model Quantile Error Plots
• 1PDEAAT Model Quantile Error Plots


• Thermal Violations Tracking
  
  
• Thermal Violations Tracking Tables
  
  
• DPA Board Temperature Scatter Plots
  
  
• 1DPAMZT, 1DEAMZT and FPTEMP high pitch "Safing" Plots
  
  
• ACIS Thermal Model Tools
  Includes: Installation, Running a Thermal Model, Developing a New Thermal Model, and Regression Testing
  
  
• Where to run thermal models from
  
  
• ACIS FP Temperature, 1CRAT, and 1CRBT at Every Perigee
  
  
• ACIS FP Temperature ML Model
  
  
• Simulating ECS Runs
• FIRST: Activating ACISpy Command-Line tools
• simulate_ecs_run script

ACIS Procedures

• CAP Template - please use for all CAPs [as of 12/13/2007]
• ACIS CAPs
• SOT Flight ACIS Procedures
• Annotated SOT and FOT Flight ACIS Procedures
• FOT FTP Site
• ACIS Hardware Commands
• ACIS BEP Dump Commands

Analyses

• EPHIN Radiation Analyses
• Detector Housing Heater Tests

ACIS Orbital Fluence

• CURRENT ACE/ACIS Flux and Fluence Values
• ACIS Ops response to Radiation Events
• ACIS Ops Storms Catalog
• Template for Radiation Alert Reply
• ACIS Orbital Proton Fluence History
• ACIS Orbital Fluence Archive: ACE Electrons & Protons
• SEC ACE EPAM 5 Min Avgs
• Handling Bogus jumps in P3
• TXings Basics


• Plot of Mission Orbital Fluence by Year
• Mission Yearly Fluence Table
• Mission Orbital Fluence Table
• Mission Orbital Fluence Budget Violations

EPHIN Orbit Thresholds

Real-Time Telemetry Links

• ACIS Real-Time Telemetry Limits: HW | PMON HKPG| SOT/MTA| AXAF-056
• Current Mnemonics of concern with limits and readout values: 1PDEAAT, 1PIN1AT, 1CB[AB]T, 1DEAMZT, 1DPAMYT, 1DPAMZT, 1DACTBT
• ACIS Flight Software Housekeeping Channels


• ACIS PMON Telemetry [MIT]
• ACIS PMON Telemetry [acis60-v]
• ACIS PMON Telemetry [aciscdp-v]
• ACIS PMON Telemetry [acisway]
• ACIS PMON Telemetry [ishmael]


Linux 64-bit Real Time Hardware Web Pages:

• ACIS Real-Time Telemetry (acis60-v)
• ACIS Real-Time Telemetry (aciscdp-v)
• ACIS Real-Time Telemetry (acisway)
• ACIS Real-Time Telemetry (ishmael)



• CHANDRA Snapshot
• CHANDRA Snapshot (backup)
• HRC Real-Time Telemetry
• MAUDE Real-Time Telemetry



• What is the Impact of a CDP Network or Power Failure/Loss?

Current MP Schedules

• Current Graphical Timeline(FOT) OCCWEB ACCESS
• Current SOT Schedules
• SOT MP homepage (Local access only)

USINT

• USINT Home Page
• Internal Target Search Form
• Target Parameter Status/Obsid Signoff Page
• USINT Contact Information
• USINT Procedures
• TOO Point of Contact

Shift Reports

• SOT Shift Reports
• Ops Lead Reports (Local Access Only)
• DSOps Status & Reports (Local Access Only)

Related ACIS and Chandra Web Sites:

• Replan Central
• SOT Home
• MIT ACIS Home Page
• Chandra X-Ray Observatory Center
• Development & Operations Science Support
• Mission Planning Page
• Pennsylvania State University (Astronomy & Astrophysics)
• CXCDS Home Page
• ArcOps Contact Info Page (local access only)
• ToO/DDT Manager Page

Solar Cycle Info

Solar Cycle data and predictions

Spacecraft IPCL Configuration and Constants

MSFC Document 1949C Telemetry Database Tables Volume 1

MSFC Document 1949C Telemetry Database Tables Volume 2

OP19 Rev C PDF

IP&CL as of March 17, 2026 - P018

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Web Page Maintained by:
Paul Plucinsky, John ZuHone, & Jack Steiner

(Please feel free to send us any comments or suggestions!)

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The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.    Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved.