<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2026-05-26T00:00:00Z" status="active" updated="2026-06-04T15:26:44Z" xmlns:g-colstat="http://dc.g-vo.org/ColStats-1" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://dc.g-vo.org/ColStats-1 http://vo.ari.uni-heidelberg.de/docs/schemata/Colstats.xsd http://www.ivoa.net/xml/RegistryInterface/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/RegistryInterface.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogResource"><title>ZTF Magnitude Statistics</title><shortName>ztf.magstat</shortName><identifier>ivo://x-unregistred/ztf/ztf_lowercase/magstat</identifier><curation><publisher>ALeRCE (Automatic Learning for the Rapid Classification of Events)</publisher><creator><name>ALeRCE Team</name><logo>https://tap.alerce.online/favicon.png</logo></creator><date role="Updated">2026-06-10T02:31:00Z</date><contact><name>ALeRCE Team</name><address>Beauchef 851, Edificio Norte, piso 6. Santiago, Chile.</address><email>alerce.broker@gmail.com</email></contact></curation><content><subject>astronomy, objects</subject><subject>ZTF</subject><subject>transients</subject><subject>time-series</subject><description>
Per-filter magnitude statistics for each ZTF object including mean, median,
min, max magnitudes both raw and corrected, along with temporal extent and
variability metrics.</description><referenceURL>http://tap.alerce.online/tableinfo/ztf.magstat</referenceURL></content><tableset><schema><name>ztf</name><title>ALeRCE ZTF Legacy Catalog</title><description>
Legacy ZTF astronomical catalog containing objects, detections, photometric measurements,
classifications, and cross-matches from the Zwicky Transient Facility (ZTF) survey,
as processed by the ALeRCE broker pipeline.</description><table><name>ztf.magstat</name><title>ZTF Magnitude Statistics</title><description>
Per-filter magnitude statistics for each ZTF object including mean, median,
min, max magnitudes both raw and corrected, along with temporal extent and
variability metrics.</description><column><name>oid</name><description>Object identifier</description><ucd>meta.id;src</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>indexed</flag><flag>primary</flag></column><column><name>fid</name><description>Filter identifier (1=g, 2=r, 3=i)</description><ucd>meta.id;instr.filter</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>indexed</flag><flag>primary</flag></column><column><name>stellar</name><description>Whether object is classified as stellar in this filter</description><ucd>src.class.starGalaxy</ucd><dataType xsi:type="vs:VOTableType">boolean</dataType></column><column><name>corrected</name><description>Whether corrected magnitudes are available for this filter</description><ucd>meta.code.qual</ucd><dataType xsi:type="vs:VOTableType">boolean</dataType></column><column><name>ndet</name><description>Number of detections in this filter</description><ucd>meta.number;src</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>indexed</flag></column><column><name>ndubious</name><description>Number of dubious (unreliable) detections in this filter</description><ucd>meta.number;src</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>dmdt_first</name><description>Rate of magnitude change around first detection (mag/day)</description><unit>mag/d</unit><ucd>phot.mag;arith.rate</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>dm_first</name><description>Magnitude change around first detection</description><unit>mag</unit><ucd>phot.mag;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>sigmadm_first</name><description>Uncertainty in dm_first</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>dt_first</name><description>Time baseline used to compute dm_first</description><unit>d</unit><ucd>time.interval</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmean</name><description>Mean magnitude</description><unit>mag</unit><ucd>phot.mag;stat.mean</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>magmedian</name><description>Median magnitude</description><unit>mag</unit><ucd>phot.mag;stat.median</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmax</name><description>Maximum (faintest) magnitude</description><unit>mag</unit><ucd>phot.mag;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmin</name><description>Minimum (brightest) magnitude</description><unit>mag</unit><ucd>phot.mag;stat.min</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>magsigma</name><description>Standard deviation of magnitude</description><unit>mag</unit><ucd>stat.stdev;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglast</name><description>Last observed magnitude</description><unit>mag</unit><ucd>phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>magfirst</name><description>First observed magnitude</description><unit>mag</unit><ucd>phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>magmean_corr</name><description>Mean corrected magnitude</description><unit>mag</unit><ucd>phot.mag;stat.mean</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmedian_corr</name><description>Median corrected magnitude</description><unit>mag</unit><ucd>phot.mag;stat.median</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmax_corr</name><description>Maximum corrected magnitude</description><unit>mag</unit><ucd>phot.mag;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magmin_corr</name><description>Minimum corrected magnitude</description><unit>mag</unit><ucd>phot.mag;stat.min</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magsigma_corr</name><description>Standard deviation of corrected magnitude</description><unit>mag</unit><ucd>stat.stdev;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglast_corr</name><description>Last observed corrected magnitude</description><unit>mag</unit><ucd>phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>magfirst_corr</name><description>First observed corrected magnitude</description><unit>mag</unit><ucd>phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>firstmjd</name><description>MJD of first detection in this filter</description><unit>d</unit><ucd>time.start;obs</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>lastmjd</name><description>MJD of last detection in this filter</description><unit>d</unit><ucd>time.end;obs</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>step_id_corr</name><description>Step identifier for the photometric correction pipeline</description><ucd>meta.id</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType></column><column><name>saturation_rate</name><description>Fraction of detections that are saturated in this filter</description><ucd>stat.probability</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column></table></schema></tableset></ri:Resource>