HEASARC Queries (astroquery.heasarc)¶
Getting started¶
This is a python interface for querying the HEASARC archive web service.
The capabilities are currently very limited … feature requests and contributions welcome!
Getting lists of available datasets¶
There are two ways to obtain a list of objects. The first is by querying around an object by name:
>>> from astroquery.heasarc import Heasarc
>>> heasarc = Heasarc()
>>> mission = 'rosmaster'
>>> object_name = '3c273'
>>> table = heasarc.query_object(object_name, mission=mission)
>>> table[:3].pprint(max_width=120)
SEQ_ID INSTRUMENT EXPOSURE NAME ... DEC START_TIME END_TIME SEARCH_OFFSET_
s ... deg mjd mjd
---------------- ---------- -------- -------------------- ... ------ ---------------- ---------------- ----------------
RH701576N00 HRI 68154 3C 273 ... 2.0500 49704.3090856482 49724.6236226852 0.190 (3c273)\n
RP600242A01 PSPCB 24822 GIOVANELLI-HAYNES CL ... 1.6000 48980.6468865741 48982.9284837963 34.236 (3c273)\n
RH700234N00 HRI 17230 3C 273 ... 2.0500 48629.2693055556 48632.4716782407 0.190 (3c273)\n
Alternatively, a query can also be conducted around a specific set of sky coordinates:
>>> from astroquery.heasarc import Heasarc
>>> from astropy.coordinates import SkyCoord
>>> heasarc = Heasarc()
>>> mission = 'rosmaster'
>>> coords = SkyCoord('12h29m06.70s +02d03m08.7s', frame='icrs')
>>> table = heasarc.query_region(coords, mission=mission, radius='1 degree')
>>> table[:3].pprint(max_width=120)
SEQ_ID INSTRUMENT EXPOSURE ... START_TIME END_TIME SEARCH_OFFSET_
s ... mjd mjd
---------------- ---------- -------- ... ---------------- ---------------- --------------------------------------
RH701576N00 HRI 68154 ... 49704.3090856482 49724.6236226852 0.191 (187.2779228198,2.0524148595)\n
RP600242A01 PSPCB 24822 ... 48980.6468865741 48982.9284837963 34.237 (187.2779228198,2.0524148595)\n
RH700234N00 HRI 17230 ... 48629.2693055556 48632.4716782407 0.191 (187.2779228198,2.0524148595)\n
Note that the query_region() converts
the passed coordinates to the FK5 reference frame before submitting the query.
Modifying returned table columns¶
Each table has a set of default columns that are returned when querying the
database. You can return all available columns for a given mission by specifying
the fields parameter in either of the above queries. For exampe:
>>> table = heasarc.query_object(object_name='3c273', mission='rosmaster', fields='All')
will return all available columns from the rosmaster mission table.
Alternatively, a comma-separated list of column names can also be provided to
specify which columns will be returned:
>>> table = heasarc.query_object(object_name='3c273', mission='rosmaster', fields='EXPOSURE,RA,DEC')
>>> table[:3].pprint()
EXPOSURE RA DEC SEARCH_OFFSET_
s deg deg
-------- -------- ------ ----------------
68154 187.2800 2.0500 0.190 (3c273)\n
24822 186.9300 1.6000 34.236 (3c273)\n
17230 187.2800 2.0500 0.190 (3c273)\n
Note that the SEARCH_OFFSET_ column will always be included in the results.
If a column name is passed to the fields parameter which does not exist in
the requested mission table, the query will fail. To obtain a list of available
columns for a given mission table, do the following:
>>> cols = heasarc.query_mission_cols(mission='rosmaster')
>>> print(cols)
['SEQ_ID', 'INSTRUMENT', 'EXPOSURE', 'NAME', 'RA', 'DEC', 'START_TIME', 'END_TIME', 'AO', 'BII', 'CLASS', 'FILTER', 'FITS_TYPE', 'INDEX_ID', 'LII', 'PI_FNAME', 'PI_LNAME', 'PROC_REV', 'PROPOSAL_NUMBER', 'QA_NUMBER', 'RDAY_BEGIN', 'RDAY_END', 'REQUESTED_EXPOSURE', 'ROLL', 'ROR', 'SITE', 'SUBJ_CAT', 'TITLE', 'SEARCH_OFFSET_']
Additional query parameters¶
By default, the query_object() method
returns all entries within approximately one degree of the specified object.
This can be modified by supplying the radius parameter. This parameter
takes a distance to look for objects. The following modifies the search radius
to 120 arcmin:
>>> from astroquery.heasarc import Heasarc
>>> heasarc = Heasarc()
>>> table = heasarc.query_object(object_name, mission='rosmaster', radius='120 arcmin')
radius takes an angular distance specified as an astropy Quantity object,
or a string that can be parsed into one (e.g., ‘1 degree’ or 1*u.degree). The
following are equivalent:
>>> table = heasarc.query_object(object_name, mission='rosmaster', radius='120 arcmin')
>>> table = heasarc.query_object(object_name, mission='rosmaster', radius='2 degree')
...
>>> from astropy import units as u
>>> table = heasarc.query_object(object_name, mission='rosmaster', radius=120*u.arcmin)
>>> table = heasarc.query_object(object_name, mission='rosmaster', radius=2*u.degree)
As per the astroquery specifications, the query_region()
method requires the user to supply the radius parameter.
The results can also be sorted by the value in a given column using the sortvar
parameter. The following sorts the results by the value in the ‘EXPOSURE’ column.
>>> table = heasarc.query_object(object_name, mission='rosmaster', sortvar='EXPOSURE')
>>> table[:3].pprint()
SEQ_ID INSTRUMENT EXPOSURE ... END_TIME SEARCH_OFFSET_
s ... mjd
---------------- ---------- -------- ... ---------------- ----------------
RH120001N00 HRI 0 ... 48079.8913773148 0.496 (3c273)\n
RH701979N00 HRI 354 ... 49726.0977083333 0.190 (3c273)\n
RP141520N00 PSPCB 485 ... 49540.0447569444 0.496 (3c273)\n
Setting the resultmax parameter controls the maximum number of results to be
returned. The following will store only the first 10 results:
>>> table = heasarc.query_object(object_name, mission='rosmaster', resultmax=10)
All of the above parameters can be mixed and matched to refine the query results.
It is also possible to select time range:
>>> from astroquery.heasarc import Heasarc
>>> heasarc = Heasarc()
>>> table = heasarc.query_region('3C273', mission="numaster", radius='1 degree', time='2019-01-01 .. 2020-01-01')
>>> table.pprint(max_width=120)
NAME RA DEC ... ISSUE_FLAG SEARCH_OFFSET_
deg deg ...
-------------------------------------------------- -------- ------ ... ---------- -------------------------------------
3C273 187.2473 2.0362 ... 0 2.077 (187.2779220936,2.0523864234)\n
Getting list of available missions¶
The query_mission_list method will return a list of available missions
that can be queried.
>>> from astroquery.heasarc import Heasarc
>>> heasarc = Heasarc()
>>> table = heasarc.query_mission_list()
>>> table.pprint()
Mission Table Table Description
-------------- ---------- --------------------------------------------------------------------------------
GALAXY CATALOG a2pic HEAO 1 A2 Piccinotti Catalog
GALAXY CATALOG abell Abell Clusters
GALAXY CATALOG abellzcat Abell Clusters Measured Redshifts Catalog
GALAXY CATALOG acceptcat Archive of Chandra Cluster Entropy Profile Tables (ACCEPT) Catalog
GALAXY CATALOG agnsdssxm2 Sloan Digital Sky Survey/XMM-Newton Type1 AGN X-Ray and Radio Properties Catalog
GALAXY CATALOG agnsdssxmm Sloan Digital Sky Survey/XMM-Newton AGN Spectral Properties Catalog
GALAXY CATALOG allwiseagn AllWISE Catalog of Mid-IR AGNs
GALAXY CATALOG arxa Atlas of Radio/X-Ray Associations (ARXA)
GALAXY CATALOG ascaegclus ASCA Elliptical Galaxies and Galaxy Clusters Catalog
GALAXY CATALOG asiagosn Asiago Supernova Catalog (Dynamic Version)
GALAXY CATALOG baxgalclus BAX X-Ray Galaxy Clusters and Groups Catalog
GALAXY CATALOG cbatpicagn CGRO BATSE-Observed Piccinotti Sample of Active Galactic Nuclei
GALAXY CATALOG ccosrssfag Chandra COSMOS Radio-Selected Star-Forming Galaxies and AGN Catalog
GALAXY CATALOG cfa2s CfA Redshift Survey: South Galactic Cap Data
GALAXY CATALOG cgmw Candidate Galaxies Behind the Milky Way
GALAXY CATALOG cosmosvlba COSMOS Field VLBA Observations 1.4-GHz Source Catalog
GALAXY CATALOG cosxfirmwc COSMOS Field X-Ray & FIR Detected AGN Multiwavelength Properties Catalog
GALAXY CATALOG denisigal First DENIS I-band Extragalactic Catalog
GALAXY CATALOG eingalcat Catalog of Galaxies Observed by the Einstein Observatory IPC & HRI
GALAXY CATALOG eingalclus Einstein Observatory Clusters of Galaxies Catalog
GALAXY CATALOG esouppsala ESO-Uppsala ESO(B) Survey
GALAXY CATALOG etgalxray Early-Type Galaxies X-Ray Luminosities Catalog
GALAXY CATALOG exgalemobj Hewitt & Burbidge (1991) Catalog of Extragalactic Emission-Line Objects
GALAXY CATALOG fricat FIRST Catalog of FR I Radio Galaxies
GALAXY CATALOG friicat FIRST Catalog of FR II Radio Galaxies
GALAXY CATALOG fsvsclustr Faint Sky Variability Survey Catalog of Galaxy Clusters and Rich Groups
... ... ...
xmm-newton xmmlss10ks XMM-Newton Large-Scale Structure Uniform 10-ksec Exposure X-Ray Source Catalog
xmm-newton xmmlssclas XMM-Newton Large-Scale Structure Optical Counterparts and Redshifts
xmm-newton xmmlssdeep XMM-Newton Large-Scale Structure Deep Full-Exposure X-Ray Source Catalog
xmm-newton xmmlssoid XMM-Newton Large-Scale Structure Optical Identifications Catalog
xmm-newton xmmmaster XMM-Newton Master Log & Public Archive
xmm-newton xmmobstars XMM-Newton OB Stars Catalog
xmm-newton xmmomcat XMM-Newton OM Object Catalog
xmm-newton xmmomcdfs XMM-Newton Optical Monitor Chandra Deep Field-South UV Catalog
xmm-newton xmmomobj XMM-Newton OM Objects (2008 Version)
xmm-newton xmmomsuob XMM-Newton Optical Monitor SUSS Catalog, v4.1: Observation IDs
xmm-newton xmmomsuss XMM-Newton Optical Monitor Serendipitous UV Source Survey Catalog, v4.1
xmm-newton xmmsdssgce 2XMMi/SDSS Galaxy Cluster Survey Extension
xmm-newton xmmsdssgcs 2XMMi/SDSS Galaxy Cluster Survey
xmm-newton xmmslewcln XMM-Newton Slew Survey Clean Source Catalog, v2.0
xmm-newton xmmslewegs XMM-Newton Slew Survey Extragalactic Sample
xmm-newton xmmslewful XMM-Newton Slew Survey Full Source Catalog, v2.0
xmm-newton xmmssc XMM-Newton Serendipitous Source Catalog (4XMM-DR10 Version)
xmm-newton xmmsscgps XMM-Newton Survey Science Center Survey of the Galactic Plane
xmm-newton xmmssclwbd XMM-Newton 2XMMi-DR3 Selected Source Detections Catalog
xmm-newton xmmssclwbs XMM-Newton 2XMMi-DR3 Selected Source Classifications Catalog
xmm-newton xmmstack XMM-Newton Serendipitous Source Catalog from Stacked Observations (4XMM-DR10s)
xmm-newton xmmstackob XMM-Newton Serendipitous Source Catalog from Stacked Observations: Obs. Data
xmm-newton xmmt2flare 2XMM Flares Detected from Tycho-2 Stars
xmm-newton xmmvaragn Ensemble X-Ray Variability of AGN in 2XMMi-DR3
xmm-newton xmmxassist XMM-Newton XAssist Source List
xmm-newton xms XMM-Newton Medium Sensitivity Survey (XMS) Source Catalog
xmm-newton xwas XMM-Newton Wide Angle Survey
Length = 1160 rows
The returned table includes both the names and a short description of each mission table.
Using alternative HEASARC servers¶
It is possible to set alternative locations for HEASARC servers. One such location is hosted by INTEGRAL Science Data Center, and has further tables listing the most recent INTEGRAL data.
>>> from astroquery.heasarc import Heasarc, Conf
>>> heasarc = Heasarc()
>>> Conf.server.set('https://www.isdc.unige.ch/browse/w3query.pl')
>>> table = heasarc.query_mission_list()
>>> table.pprint(max_width=120)
Mission Table Table Description
------------- ---------------------- -----------------------------------------------
CTASST1M-REV1 cta_sst1m_rev1_run Run
FACT-REV1 fact_rev1_run Run
INTEGRAL-REV3 integral_rev3_prop Proposals
INTEGRAL-REV3 integral_rev3_prop_obs Proposal Information and Observation Parameters
INTEGRAL-REV3 integral_rev3_scw SCW - Science Window Data
>>>
>>> table = heasarc.query_object('Crab', mission='integral_rev3_scw',
... radius='361 degree', time="2022-12-01 .. 2022-12-31",
... sortvar='START_DATE', resultmax=100000)
>>> table.pprint()
SCW_ID SCW_VER SCW_TYPE ... GOOD_OMC DSIZE SEARCH_OFFSET_
------------ ------- -------- ... -------- --------- -----------------
258300400010 001 POINTING ... 0 123494400 5199.027 (CRAB)\n
258400320021 001 SLEW ... 0 5799936 5082.095 (CRAB)\n
258400260021 001 SLEW ... 0 5791744 5104.388 (CRAB)\n
258400350010 001 POINTING ... 0 123146240 5167.027 (CRAB)\n
258700350021 001 SLEW ... 0 5750784 5120.836 (CRAB)\n
258400330010 001 POINTING ... 0 123179008 5067.991 (CRAB)\n
258400260010 001 POINTING ... 0 123371520 5093.007 (CRAB)\n
... ... ... ... ... ... ...
258400270021 001 SLEW ... 0 126386176 5114.308 (CRAB)\n
258400270010 001 POINTING ... 0 1200128 5113.839 (CRAB)\n
258700360010 001 POINTING ... 0 122130432 5136.165 (CRAB)\n
258200770010 001 POINTING ... 0 1490944 4184.684 (CRAB)\n
258200770021 001 SLEW ... 0 962560 4184.587 (CRAB)\n
258200780010 001 POINTING ... 0 1585152 4184.378 (CRAB)\n
258700340021 001 SLEW ... 0 5779456 5181.635 (CRAB)\n
Length = 1601 rows
Troubleshooting¶
If you are repeatedly getting failed queries, or bad/out-of-date results, try clearing your cache:
>>> from astroquery.heasarc import Heasarc
>>> Heasarc.clear_cache()
If this function is unavailable, upgrade your version of astroquery.
The clear_cache function was introduced in version 0.4.7.dev8479.
Reference/API¶
astroquery.heasarc Package¶
HEASARC¶
The High Energy Astrophysics Science Archive Research Center (HEASARC) is the primary archive for NASA’s (and other space agencies’) missions.
The initial version of this was coded in a sprint at the “Python in astronomy” workshop in April 2015 by Jean-Christophe Leyder, Abigail Stevens, Antonio Martin-Carrillo and Christoph Deil.
Classes¶
HEASARC query class. |
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Configuration parameters for |