Chandra data archive

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About the Chandra Data Archive

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There are two types of observations that are in the public domain: calibration observations; and GTO (guaranteed time observation), GO (guest observer), TOO (target of opportunity), DDT (director's discretionary time) observations for which the proprietary period has expired.

What is being made available is always the highest version of the products that is approved by V&V; this default version is considered to contain the highest quality data products that are available. The data products version is identified in each individual product by the value of the REVISION keyword. Older versions may be obtained by a special request to Archive Operations.

Access the Data

US site: http://cxc.harvard.edu/cda/

UK/European mirrors: http://chandra.ledas.ac.uk/

Web archive interface: http://www.ledas.ac.uk/arnie5/

Contents of the Data

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This is the listing of the Chandra databases:

AEGISX AEGIS-X Chandra Extended Groth Strip X-Ray Point Source Catalog

ARCQUINCXO Arches and Quintuplet Clusters Chandra X-Ray Point Source Catalog

BMWCHANCAT Brera Multi-scale Wavelet Chandra Source Catalog

CDFN2MSOI2 Chandra Deep Field North Updated Optical & IR Catalog

CDFN2MSOID Chandra Deep Field North 2-Megasecond Optical & IR Catalog

CDFSAGNCXO Chandra Deep Field South AGN Spectral Properties Catalog

CENACXO Centaurus A Galaxy Chandra X-Ray Point Source Catalog

CEPBOB3CXO Cep B/OB3 Star-Forming Region Chandra X-Ray Point Source Catalog

CHAINTHCXO Chamaeleon I North Cloud Chandra X-Ray Point Source Catalog

CHAMPHXAGN CHAMP (Chandra Multiwavelength Project) Hard X-Ray Emitting AGN

CHAMPLANE Chandra Multiwavelength Plane Survey Optical ID Catalog

CHAMPPSC Chandra Multiwavelength Project (ChaMP) Point Source Catalog

CHANC150PC Chandra Galactic Central 150 Parsecs Source Catalog

CHANDFN1MS Chandra Deep Field North 1-Megasecond Catalog

CHANDFN2MS Chandra Deep Field North 2-Megasecond Catalog

CHANDFS1MS Chandra Deep Field South 1-Megasecond Catalog

CHANDRAO Chandra Proposals

CHANDRAPUB Chandra Public Observations

CHANEXTDFS Chandra Extended Deep Field South Survey Point Source Catalog

CHANGALCEN Chandra Galactic Center Point Source Catalog

CHANMASTER Chandra Observations

CHANNSGPSC Chandra Nearby Spiral Galaxies Point Source Catalog

CHANSEXOID Chandra Serendipitous Extragalactic X-Ray Source ID (SEXSI) Optical Follow-Up

CHANSEXSI Chandra Serendipitous Extragalactic X-Ray Source ID (SEXSI) Catalog

CHANTYPGPR Chandra Typical Galactic Plane Region Point Source Catalog

CHANULXCAT Chandra Archive Of Galaxies Ultraluminous X-Ray Source Catalog

CHESSCAT ChaMP Extended Stellar Survey (ChESS) X-Ray Catalog

CHPNGPTSRC Chandra Nearby Galaxies Point Source Catalog

CLANS Chandra Lockman Area North Survey (CLANS) X-ray Source Catalog

CLANSOID Chandra Lockman Area North Survey (CLANS) Optical & IR Catalog

CLASXS Chandra Large-Area Synoptic X-Ray Survey of Lockman Hole-NW

CLASXSOID Chandra Large-Area Synoptic X-Ray Survey Optical & IR Catalog

COUP Chandra Orion Ultradeep Point Source Catalog

CXOXASSIST Chandra XAssist Source List

CYDER Calan-Yale Deep Extragalactic Research Survey X-Ray Source Catalog

CYGOB2CXO Cygnus OB2 Association Chandra X-Ray Point Source Catalog

CYGTEVCXO Cygnus TeV Source Chandra X-Ray Point Source Catalog

ELAISCXO ELAIS N1 and N2 Fields Chandra X-Ray Point Source Catalog

ETGALCXO Early-Type Galaxies Chandra X-Ray Point Source Catalog

GALCENCXO Galactic Center Chandra X-Ray Point Source Catalog

GC47TUCCXO 47 Tuc Globular Cluster Chandra X-Ray Point Source Catalog

GWSSTRPCXO Groth-Westphal Strip Chandra X-Ray Point Source Catalog

IC1396NCXO IC 1396N Chandra X-Ray Point Source Catalog

IC348CXO IC 348 Chandra X-Ray Point Source Catalog

LALABOOCXO LALA Bootes Field Chandra X-Ray Point Source Catalog

LMC30DRCXO LMC 30 Doradus Complex Chandra X-Ray Point Source Catalog

M17CXO M 17 Chandra X-Ray Point Source Catalog

M31CXOXRAY M31 Central Region Chandra X-Ray Point Source Catalog

M33CHASE M 33 Chandra ACIS Survey (ChASeM33) Source Catalog

M51CXO M 51 Chandra X-Ray Discrete Source Catalog

M67CXO M 67 Chandra X-Ray Point Source Catalog

M81CXO M 81 Chandra X-Ray Discrete Source Catalog

M87CXO M 87 Chandra X-Ray Point Source Catalog

MONR2CXO Monoceros R2 Cloud Chandra X-Ray Point Source Catalog

NGC1333CXO NGC 1333 Chandra X-Ray Point Source Catalog

NGC2024CXO NGC 2024 Chandra X-Ray Point Source Catalog

NGC2244CXO NGC 2244/Rosette Nebula Chandra X-Ray Point Source Catalog

NGC2264CX2 NGC 2264 Chandra X-Ray Point Source Catalog 2

NGC2264CXO NGC 2264 Chandra X-Ray Point Source Catalog

NGC2362CXO NGC 2362 Chandra X-Ray Point Source Catalog

NGC2516CXO NGC 2516 Chandra X-Ray Point Source Catalog

NGC2808CXO NGC 2808 Chandra X-Ray Point Source Catalog

NGC4649CXO NGC 4649 Chandra X-Ray Discrete Source Catalog

NGC6357CXO NGC 6357 Chandra X-Ray Point Source Catalog

NGC6530CXO NGC 6530 Chandra X-Ray Point Source Catalog

NGC6530OID NGC 6530 Chandra Point Source Optical/IR Identifications Catalog

NGC752CXO NGC 752 Chandra X-Ray Point Source Catalog

OMC2P3CXO OMC-2 and OMC-3 Chandra X-Ray Point Source Catalog

ONCCXOOPT Orion Nebula Cluster Chandra HRC Optical Sample

ONCCXOXRAY Orion Nebula Cluster Chandra HRC X-Ray Point Source Catalog

ORIONFFCXO Orion Flanking Fields Chandra X-Ray Point Source Catalog

RCW108CXO RCW 108 Star Formation Region Chandra X-Ray Point Source Catalog

RCW38CXO RCW 38 Chandra X-Ray Point Source Catalog

RCW49CXO RCW 49 Chandra X-Ray Point Source Catalog

RHOOPHCXO Rho Ophiuchi SFR Chandra X-Ray Point Source Catalog

SDSSCXOQSO Sloan Digital Sky Survey Quasars Detected by Chandra

SMCWINGCXO Small Magellanic Cloud Wing Survey Chandra X-Ray Point Source Catalog

SPICESCXO SPICES Lynx Field Chandra X-Ray Source Catalog

SWIRECXO Spitzer Wide-Area IR Extra-Galactic Survey Chandra X-Ray Sources

TRIFIDCXO Trifid Nebula (M 20) Chandra X-Ray Point Source Catalog

VLACDFSCAT VLA Survey of Chandra Deep Field South

WD1CXO Westerlund 1 Chandra X-Ray Point Source Catalog

XBOOTES XBOOTES: NDWFS Bootes Field X-Ray Point Source Catalog

XBOOTESOID XBOOTES: NDWFS Bootes Field Optical & Near IR Counterparts