Table information for 'hess_dr.obscore'

General

Table Description: IVOA ObsCore description of event lists for observations in the H.E.S.S. DL3 public test data release 1. The release consists of event lists and instrument response functions for observations of various well-known gamma-ray sources (the Crab nebula, PKS 2155-304, MSH 15-52, RX J1713.7-3946) as well as observations of empty fields for background modeling.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: The release consists of event lists and instrument response functions for observations of various well-known gamma-ray sources (the Crab nebula, PKS 2155-304, MSH 15-52, RX J1713.7-3946) as well as observations of empty fields for background modeling.

For a list of all services and tables belonging to this table's resource, see Information on resource 'H.E.S.S. DL3 public test data release 1'

Resource Reference URL: https://www.mpi-hd.mpg.de/hfm/HESS/pages/dl3-dr1/

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:HESS_DL3_DR1,
  year=2018,
  title={H.E.S.S. DL3 public test data release 1},
  author={H.E.S.S. collaboration},
  url={https://hesr-dr.obspm.fr},
  howpublished={{VO} resource provided by the {PADC} {TAP} Server on voparis-tap-he.obspm.fr}
}

H.E.S.S. collaboration, 2018. The data and documentation is publicly released by the H.E.S.S. collaboration as a contribution to the ongoing efforts to define a common open format for data level 3 of imaging atmospheric Cherenkov telescopes (IACTs) and IACT open-source science tool development, to enlarge the community involved in IACT data analysis. No scientific publications may be derived from the data. Using the data for new claims about the astrophysical sources is not permitted. When using this data, please include the following attribution: "This work made use of data from the H.E.S.S. DL3 public test data release 1 (HESS DL3 DR1, H.E.S.S. collaboration, 2018)". Alternatively, use the following shorter version, e.g. for presentations: "HESS DL3 DR1, H.E.S.S. collaboration". These terms of use must be included in all copies in full or part of the data.

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
access_estsize Size Estimated size of data product kbyte phys.size;meta.file
access_format Media Type MIME type of the resource at access_url N/A meta.code.mime
access_url Access URL The URL at which to obtain the data set. N/A meta.ref.url
alt_pnt Alt_pnt Observation pointing altitude at observation mid-time TMID deg pos
az_pnt Az_pnt Observation pointing azimuth at observation mid-time TMID deg pos
calib_level Calibration level Amount of data processing that has been applied to the data [Note calib] N/A meta.code;obs.calib
coverage Coverage introduces an ascii (ST)MOC, v2 (2D footprint on celestial, spherical, or body-related frames, possibly including time) N/A pos.outline;obs.field
dataproduct_subtype Subtype Data product specific type N/A meta.code.class
dataproduct_type Product type High level scientific classification of the data product, taken from an enumeration N/A meta.code.class
date_end Date_end Observation end date N/A time.end;obs.exposure
date_obs Date_obs Observation start date N/A time.start;obs.exposure
deadc Deadc Dead time correction. It is defined such that LIVETIME = DEADC * ONTIME i.e. the fraction of time the telescope was actually able to take data. N/A time;arith.ratio
dec_obj Dec_obj Declination of OBJECT deg pos.eq.dec
dec_pnt Dec_pnt Observation pointing declination deg pos.eq.dec
em_max λ_max Maximal wavelength represented within the data set m em.wl;stat.max
em_min λ_min Minimal wavelength represented within the data set m em.wl;stat.min
em_res_power λ/Δλ Spectral resolving power lambda/delta lambda N/A spect.resolution
em_ucd Spect. UCD Nature of the product's spectral axis (typically, em.freq, em.wl, or em.energy) N/A meta.ucd
em_xel |λ| Number of elements (typically pixels) along the spectral axis. N/A meta.number
event_count Event_count Number of events N/A meta.number
facility_name Facility Name of the facility at which data was taken N/A meta.id;instr.tel
glat_pnt Glat_pnt Observation pointing Galactic latitude deg pos.galactic.lat
glon_pnt Glon_pnt Observation pointing Galactic longitude deg pos.galactic.lon
instrument_name Instrument Name of the instrument that produced the data N/A meta.id;instr
livetime Livetime Total livetime (observation minus dead time) s time
muoneff Muoneff Mean muon efficiency. Currently use definitions from analysis chain, since creating a unified specification is tricky. N/A N/A
n_tels N_tels Number of participating telescopes N/A meta.number
o_ucd Obs. UCD UCD for the product's observable N/A meta.ucd
object Object Primary target of the observation N/A meta.id;src
obs_collection Collection Name of a data collection (e.g., project name) this data belongs to N/A meta.id
obs_creator_did Creator DID Dataset identifier assigned by the creator. N/A meta.id
obs_id Obs. Id Unique identifier for an observation N/A meta.id
obs_publisher_did Pub. DID Dataset identifier assigned by the publisher. N/A meta.ref.ivoid
obs_title Title Free-from title of the data set N/A meta.title;obs
offset_obj Offset_obj Distance between observation position and OBJECT deg instr.offset
ontime Ontime Total observation time (including dead time). Equals TSTOP - TSTART s time.duration
pol_states Pol. States List of polarization states in the data set N/A meta.code;phys.polarization
pol_xel |Pol| Number of elements (typically pixels) along the polarization axis. N/A meta.number
preview Preview URL of a preview (low-resolution, quick-to-retrieve representation) of the data. N/A meta.ref.url;meta.preview
quality Quality Observation data quality. The following levels of data quality are defined: -1 = unknown quality, 0 = best quality, suitable for spectral analysis, 1 = medium quality, suitable for detection, but not spectra (typically if the atmosphere was hazy), 2 = bad quality, usually not to be used for analysis. N/A meta.code.qual
ra_obj Ra_obj Right ascension of OBJECT deg pos.eq.ra
ra_pnt Ra_pnt Observation pointing right ascension deg pos.eq.ra
s_dec Dec Dec of (center of) observation, ICRS deg pos.eq.dec
s_fov FoV Approximate spatial extent for the region covered by the observation deg phys.angSize;instr.fov
s_pixel_scale Pix. Scale Sampling period in world coordinate units along the spatial axis arcsec phys.angSize;instr.pixel
s_ra RA RA of (center of) observation, ICRS deg pos.eq.ra
s_region coverage Region covered by the observation, as a polygon N/A pos.outline;obs.field
s_resolution Space Res. Best spatial resolution within the data set arcsec pos.angResolution
s_xel1 |X| Number of elements (typically pixels) along the first spatial axis. N/A meta.number
s_xel2 |Y| Number of elements (typically pixels) along the second spatial axis. N/A meta.number
safe_energy_hi Safe_energy_hi High energy threshold TeV em.energy;stat.max
safe_energy_lo Safe_energy_lo Low energy threshold TeV em.energy;stat.min
source_table Source Table Name of a TAP-queriable table this data originates from. This source table usually provides more information on the the data than what is given in obscore. See the TAP_SCHEMA of the originating TAP server for details. N/A meta.id;meta.table
t_exptime Exp. Time Total exposure time s time.duration;obs.exposure
t_max Max. t Upper bound of times represented in the data set d time.end;obs.exposure
t_min Min. t Lower bound of times represented in the data set d time.start;obs.exposure
t_resolution Res. t Minimal significant time interval along the time axis s time.resolution
t_xel |t| Number of elements (typically pixels) along the time axis. N/A meta.number
target_class Target Class Class of the target object (star, QSO, ...) N/A src.class
target_name Target Name Object a targeted observation targeted N/A meta.id;src
target_name_subset Target_name_subset The observation subset name N/A meta.id;src
target_offset Target_offset Distance between observation position and target deg instr.offset
target_tag Target_tag Target tag N/A meta.id;src.class
tellist Tellist Telescope IDs (e.g. ?1,2,3,4?) N/A meta.id;instr.tel
time_end Time_end Observation end time N/A time.end;obs.exposure
time_obs Time_obs Observation start time N/A time.start;obs.exposure
tstart Tstart Start time of observation relative to the reference time N/A time.start
tstop Tstop End time of observation relative to the reference time N/A time.end
zen_pnt Zen_pnt Observation pointing zenith angle at observation mid-time TMID deg pos

Columns that are parts of indices are marked like this.

VOResource

VO nerds may sometimes need VOResource XML for this table.

Notes