Table information for 'ctao_sdc.obscore'

General

Table Description: IVOA ObsCore description of event lists for simulated observation of the CTAO Science Data Challenge

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

Resource Description: CTAO Science Data Challenge test data

For a list of all services and tables belonging to this table's resource, see Information on resource 'CTAO-SDC'

Resource Reference URL: https://voparis-tap-he.obspm.fr

Citing this table

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

@MISC{vo:CTAO_SDC,
  year=2026,
  title={{CTAO}-{SDC}},
  author={{CTAO}},
  url={http://voparis-tap-he.obspm.fr/tableinfo/ctao_sdc.obscore},
  howpublished={{VO} resource provided by the {PADC} {TAP} Server on voparis-tap-he.obspm.fr}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
dataproduct_type Product type High level scientific classification of the data product, taken from an enumeration N/A meta.code.class
dataproduct_subtype Subtype Data product specific type N/A meta.code.class
calib_level Calibration level Amount of data processing that has been applied to the data [Note calib] N/A meta.code;obs.calib
obs_collection Collection Name of a data collection (e.g., project name) this data belongs to N/A meta.id
obs_id Obs. Id Unique identifier for an observation N/A meta.id
obs_title Title Free-from title of the data set N/A meta.title;obs
obs_publisher_did Pub. DID Dataset identifier assigned by the publisher. N/A meta.ref.ivoid
obs_creator_did Creator DID Dataset identifier assigned by the creator. N/A meta.id
access_url Access URL The URL at which to obtain the data set. N/A meta.ref.url
access_format Media Type MIME type of the resource at access_url N/A meta.code.mime
access_estsize Size Estimated size of data product kbyte phys.size;meta.file
target_name Target Name Object a targeted observation targeted N/A meta.id;src
target_class Target Class Class of the target object (star, QSO, ...) N/A src.class
s_ra RA RA of (center of) observation, ICRS 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_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
t_min Min. t Lower bound of times represented in the data set d time.start;obs.exposure
t_max Max. t Upper bound of times represented in the data set d time.end;obs.exposure
t_exptime Exp. Time Total exposure time s time.duration;obs.exposure
t_resolution Res. t Minimal significant time interval along the time axis s time.resolution
em_min λ_min Minimal wavelength represented within the data set m em.wl;stat.min
em_max λ_max Maximal wavelength represented within the data set m em.wl;stat.max
em_res_power λ/Δλ Spectral resolving power lambda/delta lambda N/A spect.resolution
o_ucd Obs. UCD UCD for the product's observable N/A meta.ucd
pol_states Pol. States List of polarization states in the data set N/A meta.code;phys.polarization
facility_name Facility Name of the facility at which data was taken N/A meta.id;instr.tel
instrument_name Instrument Name of the instrument that produced the data N/A meta.id;instr
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
t_xel |t| Number of elements (typically pixels) along the time axis. N/A meta.number
em_xel |λ| Number of elements (typically pixels) along the spectral axis. N/A meta.number
pol_xel |Pol| Number of elements (typically pixels) along the polarization axis. N/A meta.number
s_pixel_scale Pix. Scale Sampling period in world coordinate units along the spatial axis arcsec phys.angSize;instr.pixel
em_ucd Spect. UCD Nature of the product's spectral axis (typically, em.freq, em.wl, or em.energy) N/A meta.ucd
preview Preview URL of a preview (low-resolution, quick-to-retrieve representation) of the data. N/A meta.ref.url;meta.preview
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
ev_xel Ev_xel Number of events in an event list N/A meta.number;obs.event
s_ref_energy S_ref_energy Energy at which the ObsCore spatial characterization attributes s_fov, s_region, s_resolution are defined eV meta.ref;em.energy;pos
em_ref_energy Em_ref_energy Energy at which the ObsCore spectral characterization attributes em_res_power, em_resolution are defined eV meta.ref;em.energy;em
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 pos.posAng;instr.offset;pos
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 pos.posAng;instr.offset;em
t_intervals T_intervals List of observation intervals or stable/good time intervals describing the exact observation time coverage as a TMOC N/A N/A
energy_min Energy_min Energy associated to the ObsCore attribute em_max, describing the minimum energy of the dataset eV em.energy;stat.min
energy_max Energy_max Energy associated to the ObsCore attribute em_min, describing the maximum energy of the dataset eV em.energy;stat.max
obs_mode Obs_mode Observation mode of an observation N/A meta.code;obs.param
tracking_mode Tracking_mode Tracking mode of an observation (e.g., sidereal rate, moving target [solar system] tracking, drift scans) N/A meta.code;obs.param
scan_mode Scan_mode Scan mode of an observation N/A meta.code;obs.param
pointing_mode Pointing_mode Pointing mode of an observation N/A meta.code;obs.param
analysis_mode Analysis_mode Data reduction/analysis mode N/A meta.code;obs.param
event_type Event_type Event subset indicator (e.g., data quality flag for the events) N/A meta.code.qual;obs.event
messenger Messenger Messenger particle type (e.g., photon, cosmicray, neutrino, pdgid-13) N/A N/A
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
scs_id Scs_id observation id for simple cone search N/A meta.id;meta.main
datalink DL URL of a datalink document for this dataset N/A meta.ref.url
access_url_this Download URL for direct download of the event-list N/A meta.ref.url
lfn LFN Logical File Name in Sciuence Archive N/A meta.ref.url

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.

Notes

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)