- ID:
- ivo://nasa.heasarc/ascamaster
- Title:
- ASCA Master Catalog
- Short Name:
- ASCA
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The ASCAMASTER table contains data on all ASCA observations that were ever in any of the following states: 'Accepted', 'Scheduled Long-Term', 'Scheduled Short-Term', 'Processed', and 'Archived'. The final status of an observation is given by the parameter Status. Specific dates that affect the status of an observation are listed as the parameters scheduled_date, observed_date, processed_date, archived_date, and cycle. Notice that, if one or more of the date parameters are empty for a given observation, this means that that those particular processes have not occurred: e.g., if observed_date is empty, this means that the planned observation was not observed. This is a service provided by NASA HEASARC .
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- ID:
- ivo://nasa.heasarc/bbxrt
- Title:
- BBXRT Archive
- Short Name:
- BBXRT
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The BBXRT database table contains information about each observation made by the Broad Band X-Ray Telescope. It includes a catalog of observations and spectral and lightcurve products for each of the 10 pixels per observation. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/saxnfilog
- Title:
- BeppoSAX NFI Archive and Observation Log
- Short Name:
- SAXNFI
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The SAXNFILOG database contains the SAX Narrow Field Instruments (NFI) approved pointings, but it also served as an observations log. It includes data taken during AO1, AO2, AO3, A04 and AO5 cycles and the Science Verification Phase (SVP). This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/saxwfclog
- Title:
- BeppoSAX WFC Observation Log
- Short Name:
- SAXWFC
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The SAXWFCLOG database contains the SAX WFCs observations log for the AO cycles and the Science Verification Phase (SVP). The two WFCs are located at 90 degrees from the NFI and set 180 degrees apart. The field of view is 40 deg X 40 deg and the coordinates given in this databases are the pointing positions. The database is updated regularly to include the most recent timeline, and updates are provided by the SAX-Science Data Center in Rome. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/calchdmstr
- Title:
- CALET CHarge Detector (CHD) Master Catalog
- Short Name:
- CALCHDMSTR
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The CALCHDMSTR database table records high-level information of the lightcurves obtained with the CHarge Detector (CHD), the top layer of the calorimeter instrument on the CALorimetric Electron Telescope (CALET) mission. CALET is a Japanese mission led by JAXA, in collaboration with the Italian Space Agency (ASI) and NASA, and is dedicated to the study of high energy cosmic rays. CALET was launched on August 19, 2015, by a Japanese carrier, H2 Transfer Vehicle, and robotically installed on the Japanese Experiment Module-Exposed Facility (JEM-EF) on the International Space Station (ISS). CALET started scientific observations in October, 2015. The CALET CHD lightcurves are delivered by the CALET team in Japan as ASCII files to the DARTS archive located at ISAS (Japan). The HEASARC developed software to create the FITS versions of the lightcurves. This is run at DARTS, and the output is placed online at <a href="https://darts.isas.jaxa.jp/astro/calet/">https://darts.isas.jaxa.jp/astro/calet/</a>. The HEASARC hosts a copy of these lightcurves and generates this database table by collecting high-level information from the data. The Data and the database table are updated regularly during operation. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/calgbmmstr
- Title:
- CALET Gamma-Ray Burst Monitor (GBM) Master Catalog
- Short Name:
- CALGBMMSTR
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The CALGBMMSTR database table records high-level information of the observations obtained with the CALET Gamma-ray Burst Monitor (CGBM), the second scientific payload on the CALorimetric Electron Telescope (CALET) mission. The Gamma-ray Burst Monitor provides a broadband energy coverage from 7 keV to 20 MeV and simultaneous observations with the primary instrument CALET Calorimeter (CCAL) in the GeV - TeV gamma-ray range and with the Advanced Star Camera (ASC) in the optical for gamma-ray bursts (GRBs) and other X-ray/gamma-ray transients. CALET is a Japanese mission led by JAXA, in collaboration with the Italian Space Agency (ASI) and NASA, and it is dedicated to the study of high energy cosmic rays. CALET was launched on August 19, 2015, by a Japanese carrier, H2 Transfer Vehicle, and robotically installed on the Japanese Experiment Module-Exposed Facility (JEM-EF) on the International Space Station (ISS). CALET started scientific observations in October, 2015. The CALET GBM Team in collaboration with DARTS and HEASARC developed the FITS file structure for the GBM data and their archive. The CALET GBM data are delivered by the CALET GBM team in Japan to the DARTS archive located at ISAS (Japan). The HEASARC hosts a copy of these data and generates this database table by collecting high-level information from the data. The data and the database table are updated regularly during operation. The first data release includes PH and TH data. Event data and the image from the ASC are added in a second phase. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/batsedaily
- Title:
- CGRO/BATSE Daily Data
- Short Name:
- BATSEDAILY
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This is the CGRO/BATSE Daily Data database table. It contains entries for each day for which BATSE data has been processed. This database table was created and updated by the HEASARC based on information supplied by the CGRO Project. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/comptel
- Title:
- CGRO/COMPTEL Low-Level Data and Maps
- Short Name:
- COMPTEL
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- COMPTEL is both the name of the Imaging Compton Telescope on the Compton Gamma Ray Observatory (CGRO) and the name of this HEASARC database table which allows the user to select low-level data and maps produced by this instrument. Much more information on the COMPTEL instrument, data products, and data analysis techniques can be obtained from the Compton Observatory Science Support Center (COSSC) web site at <pre> <a href="https://heasarc.gsfc.nasa.gov/docs/cgro/">https://heasarc.gsfc.nasa.gov/docs/cgro/</a> </pre> and from the article in Legacy No. 7 on the HEASARC CGRO Data Archive <pre> <a href="https://heasarc.gsfc.nasa.gov/docs/journal/cgro7.html">https://heasarc.gsfc.nasa.gov/docs/journal/cgro7.html</a> </pre> Interactions in COMPTEL occur in a two stage process: First, a Compton collision occurs in one of seven (low-Z) liquid scintillators and is usually then completely absorbed in one of fourteen (high-Z) NaI(Tl) scintillators. The unusual aspect of this detector is that the location of the gamma-ray on the sky is given by an annulus and not a point. The correlation of many events enables the localization of point sources or the creation of sky maps. Time-of-flight measurements, pulse shape discrimination and anti-coincidence shields are used to reject background events. COMPTEL has a wide field of view (about 1 steradian, equivalent to a FWHM of about 40 degrees), an angular resolution under optimal conditions of about 1 degree, and an energy resolution that ranges from 5-10% at 1 MeV. During Phase 1 of the CGRO mission, COMPTEL completed the first all-sky survey in the energy range of 0.75-30 MeV (in four energy bands). In addition, COMPTEL can measure energy spectra of solar flares or bright cosmic gamma-ray bursts between 0.1-10 MeV, and neutrons from solar flares. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/egretdata
- Title:
- CGRO/EGRET Photon Lists and Maps
- Short Name:
- GRO/EGRET
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The Energetic Gamma-Ray Experiment Telescope (EGRET), which operated from 1991-April until 2000-May, was sensitive to photons in the energy range from about 30 MeV to over 20 GeV, the highest energies accessible by the CGRO instruments, and, like COMPTEL, was an imaging instrument. This catalog includes photon lists in qvp files, with one file for each EGRET viewing period. Photons which pass an energy-dependent cut on zenith angle (to exclude earth-albedo gamma rays) are processed into maps of photon counts for a standard set of energy ranges. Exposure and intensity (counts divided by exposure) maps are generated for each counts map. The counts maps typically include photons detected up to 40 degrees from the instrument axis. Most analysis has been done using data within 30 degrees of the instrument axis, where the point-spread function is narrower and the effective area greater than further off axis. All EGRET data files in the archive are the final versions, produced after the end of the mission. More detailed information about EGRET, EGRET data, and EGRET data analysis software can be found at: <pre> <a href="https://heasarc.gsfc.nasa.gov/docs/cgro/egret/egret_doc.html">https://heasarc.gsfc.nasa.gov/docs/cgro/egret/egret_doc.html</a> </pre> The data contained in this database table was supplied by the CGRO Science Support Center. The contents this table was last updated in May 2001. Galactic coordinates were added to the table by the HEASARC in August 2005. This is a service provided by NASA HEASARC .
10. CGRO Timeline
- ID:
- ivo://nasa.heasarc/cgrotl
- Title:
- CGRO Timeline
- Short Name:
- CGROTL
- Date:
- 07 Mar 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The Compton Gamma-Ray Observatory (CGRO) was the second of NASA's Great Observatories. It was launched on April 5, 1991, from Space Shuttle Atlantis. It operated successfully for 9 years, and then was safely de-orbited and re-entered the Earth's atmosphere on June 4, 2000. Compton had four instruments that covered an unprecedented six decades of the electromagnetic spectrum, from 30 keV to 30 GeV. In order of increasing spectral energy coverage, these instruments were the Burst And Transient Source Experiment (BATSE), the Oriented Scintillation Spectrometer Experiment (OSSE), the Imaging Compton Telescope (CompTel), and the Energetic Gamma Ray Experiment Telescope (EGRET). BATSE viewed the full sky, as a transient monitor and is thus not included in this database table of pointed telescope observations. Also, EGRET and CompTel had wide fields of view, about 30 degrees, and, as such, viewed multiple targets per X-axis pointing. OSSE could be slewed (about one axis) independently from the spacecraft, so it typically viewed 2 targets per spacecraft Z-axis orientation, or "viewing period." Viewing periods were typically two weeks long. This database table contains the CGRO observations for Cycles 1 through 9. The Cycle 1 observations for EGRET and COMPTEL were part of the All-Sky Survey with no defined targets. This database table was last updated in November 2001. The information contained therein was provided by the Compton Observatory Science Support Center (COSSC). Galactic coordinates were added to the table by the HEASARC in August 2005. Duplicate entries in the table were removed in June 2019. This is a service provided by NASA HEASARC .
