Information on Service 'H.E.S.S. DL3 DR1 Cone Search Service'

[Use this service from your browser]

Further access options are discussed below

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 service's resource, see Information on resource 'H.E.S.S. DL3 public test data release 1'

Overview

You can access this service using:

Coverage

Intervals of messenger energies reflected in this resource: 1.5e+11 2.3e+14 eV

Time covered by this resource's data: 2004.23 2008.66

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
maxrec Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
responseformat Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
verb Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

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
analysis_mode Analysis_mode Observation mode of an observation N/A obs.param
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
datalink DL URL of a datalink document for this dataset N/A meta.ref.url
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;meta.main
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_ref_energy Em_ref_energy Energy at which the ObsCore spectral characterization attributes em_res_power, em_resolution are defined eV em.energy
em_ref_oaa Em_ref_oaa Off-axis angle (i.e., the angular separation of the target or source from the telescope optical axis) at which the ObsCore spectral characterization attributes em_res_power, em_resolution are defined deg N/A
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
energy_max Energy_max Energy associated to the ObsCore attribute em_min, describing the maximum energy of the dataset eV em.energy
energy_min Energy_min Energy associated to the ObsCore attribute em_max, describing the minimum energy of the dataset eV em.energy
ev_xel Ev_xel Number of events in an event list N/A meta.number
event_count Event_count Number of events N/A meta.number
event_type Event_type Event subset indicator (e.g., data quality flag for the events) N/A obs.param
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_mode Obs_mode Observation mode of an observation N/A instr.param
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
pointing_mode Pointing_mode Pointing mode of an observation N/A instr.param
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;meta.main
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_ref_energy S_ref_energy Energy at which the ObsCore spatial characterization attributes s_fov, s_region, s_resolution are defined eV em.energy
s_ref_oaa S_ref_oaa Off-axis angle (i.e., the angular separation of the target or source from the telescope optical axis) at which the ObsCore spatial characterization attributes s_fov, s_region, s_resolution are defined deg N/A
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
scan_mode Scan_mode Scan mode of an observation N/A instr.param
t_exptime Exp. Time Total exposure time s time.duration;obs.exposure
t_intervals T_intervals List of observation intervals or stable/good time intervals describing the exact observation time coverage as a TMOC N/A em.energy
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
tracking_type Tracking_type Tracking type of an observation N/A instr.param
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

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
access_url Access URL The URL at which to obtain the data set. N/A meta.ref.url 1
s_ra RA RA of (center of) observation, ICRS deg pos.eq.ra 1
s_dec Dec Dec of (center of) observation, ICRS deg pos.eq.dec 1
datalink DL URL of a datalink document for this dataset N/A meta.ref.url 1
dataproduct_type Product type High level scientific classification of the data product, taken from an enumeration N/A meta.code.class 5
obs_id Obs. Id Unique identifier for an observation N/A meta.id 5
obs_title Title Free-from title of the data set N/A meta.title;obs 5
obs_publisher_did Pub. DID Dataset identifier assigned by the publisher. N/A meta.ref.ivoid 5
access_format Media Type MIME type of the resource at access_url N/A meta.code.mime 5
access_estsize Size Estimated size of data product kbyte phys.size;meta.file 5
s_fov FoV Approximate spatial extent for the region covered by the observation deg phys.angSize;instr.fov 5
calib_level Calibration level Amount of data processing that has been applied to the data Note calib N/A meta.code;obs.calib 10
t_min Min. t Lower bound of times represented in the data set d time.start;obs.exposure 10
t_max Max. t Upper bound of times represented in the data set d time.end;obs.exposure 10
t_exptime Exp. Time Total exposure time s time.duration;obs.exposure 10
em_min λ_min Minimal wavelength represented within the data set m em.wl;stat.min 10
em_max λ_max Maximal wavelength represented within the data set m em.wl;stat.max 10
s_xel1 |X| Number of elements (typically pixels) along the first spatial axis. N/A meta.number 10
s_xel2 |Y| Number of elements (typically pixels) along the second spatial axis. N/A meta.number 10
t_xel |t| Number of elements (typically pixels) along the time axis. N/A meta.number 10
em_xel |λ| Number of elements (typically pixels) along the spectral axis. N/A meta.number 10
pol_xel |Pol| Number of elements (typically pixels) along the polarization axis. N/A meta.number 10
s_pixel_scale Pix. Scale Sampling period in world coordinate units along the spatial axis arcsec phys.angSize;instr.pixel 10
obs_collection Collection Name of a data collection (e.g., project name) this data belongs to N/A meta.id 15
obs_creator_did Creator DID Dataset identifier assigned by the creator. N/A meta.id 15
target_name Target Name Object a targeted observation targeted N/A meta.id;src 15
s_region coverage Region covered by the observation, as a polygon N/A pos.outline;obs.field 15
s_resolution Space Res. Best spatial resolution within the data set arcsec pos.angResolution 15
t_resolution Res. t Minimal significant time interval along the time axis s time.resolution 15
em_res_power λ/Δλ Spectral resolving power lambda/delta lambda N/A spect.resolution 15
o_ucd Obs. UCD UCD for the product's observable N/A meta.ucd 15
pol_states Pol. States List of polarization states in the data set N/A meta.code;phys.polarization 15
facility_name Facility Name of the facility at which data was taken N/A meta.id;instr.tel 15
instrument_name Instrument Name of the instrument that produced the data N/A meta.id;instr 15
em_ucd Spect. UCD Nature of the product's spectral axis (typically, em.freq, em.wl, or em.energy) N/A meta.ucd 15
preview Preview URL of a preview (low-resolution, quick-to-retrieve representation) of the data. N/A meta.ref.url;meta.preview 15
target_class Target Class Class of the target object (star, QSO, ...) N/A src.class 20
ev_xel Ev_xel Number of events in an event list N/A meta.number 20
s_ref_energy S_ref_energy Energy at which the ObsCore spatial characterization attributes s_fov, s_region, s_resolution are defined eV em.energy 20
em_ref_energy Em_ref_energy Energy at which the ObsCore spectral characterization attributes em_res_power, em_resolution are defined eV em.energy 20
s_ref_oaa S_ref_oaa Off-axis angle (i.e., the angular separation of the target or source from the telescope optical axis) at which the ObsCore spatial characterization attributes s_fov, s_region, s_resolution are defined deg N/A 20
em_ref_oaa Em_ref_oaa Off-axis angle (i.e., the angular separation of the target or source from the telescope optical axis) at which the ObsCore spectral characterization attributes em_res_power, em_resolution are defined deg N/A 20
t_intervals T_intervals List of observation intervals or stable/good time intervals describing the exact observation time coverage as a TMOC N/A em.energy 20
energy_min Energy_min Energy associated to the ObsCore attribute em_max, describing the minimum energy of the dataset eV em.energy 20
energy_max Energy_max Energy associated to the ObsCore attribute em_min, describing the maximum energy of the dataset eV em.energy 20
obs_mode Obs_mode Observation mode of an observation N/A instr.param 20
tracking_type Tracking_type Tracking type of an observation N/A instr.param 20
scan_mode Scan_mode Scan mode of an observation N/A instr.param 20
pointing_mode Pointing_mode Pointing mode of an observation N/A instr.param 20
analysis_mode Analysis_mode Observation mode of an observation N/A obs.param 20
event_type Event_type Event subset indicator (e.g., data quality flag for the events) N/A obs.param 20
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 20
ra_pnt Ra_pnt Observation pointing right ascension deg pos.eq.ra;meta.main 20
dec_pnt Dec_pnt Observation pointing declination deg pos.eq.dec;meta.main 20
glon_pnt Glon_pnt Observation pointing Galactic longitude deg pos.galactic.lon 20
glat_pnt Glat_pnt Observation pointing Galactic latitude deg pos.galactic.lat 20
zen_pnt Zen_pnt Observation pointing zenith angle at observation mid-time TMID deg pos 20
alt_pnt Alt_pnt Observation pointing altitude at observation mid-time TMID deg pos 20
az_pnt Az_pnt Observation pointing azimuth at observation mid-time TMID deg pos 20
object Object Primary target of the observation N/A meta.id;src 20
ra_obj Ra_obj Right ascension of OBJECT deg pos.eq.ra 20
dec_obj Dec_obj Declination of OBJECT deg pos.eq.dec 20
offset_obj Offset_obj Distance between observation position and OBJECT deg instr.offset 20
ontime Ontime Total observation time (including dead time). Equals TSTOP - TSTART s time.duration 20
livetime Livetime Total livetime (observation minus dead time) s time 20
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 20
tstart Tstart Start time of observation relative to the reference time N/A time.start 20
tstop Tstop End time of observation relative to the reference time N/A time.end 20
date_obs Date_obs Observation start date N/A time.start;obs.exposure 20
time_obs Time_obs Observation start time N/A time.start;obs.exposure 20
date_end Date_end Observation end date N/A time.end;obs.exposure 20
time_end Time_end Observation end time N/A time.end;obs.exposure 20
n_tels N_tels Number of participating telescopes N/A meta.number 20
tellist Tellist Telescope IDs (e.g. ?1,2,3,4?) N/A meta.id;instr.tel 20
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 20
muoneff Muoneff Mean muon efficiency. Currently use definitions from analysis chain, since creating a unified specification is tricky. N/A N/A 20
event_count Event_count Number of events N/A meta.number 20
target_name_subset Target_name_subset The observation subset name N/A meta.id;src 20
target_tag Target_tag Target tag N/A meta.id;src.class 20
target_offset Target_offset Distance between observation position and target deg instr.offset 20
safe_energy_lo Safe_energy_lo Low energy threshold TeV em.energy;stat.min 20
safe_energy_hi Safe_energy_hi High energy threshold TeV em.energy;stat.max 20
dataproduct_subtype Subtype Data product specific type N/A meta.code.class 25
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 25

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

Citation Info

VOResource XML (that's something exclusively for VO nerds)

Note calib

The calib_level flag takes the following values:

0 Raw Instrumental data requiring instrument-specific tools
1 Instrumental data processable with standard tools
2 Calibrated, science-ready data without instrument signature
3 Enhanced data products (e.g., mosaics)