MASTER OT J011025.98-583210.6: Swift observation summary

Mission:	MASTER
GRB RA:	17.608°
GRB Dec:	-58.536°
GRB Err:	5 arcsec
T0:	2025-10-12 03:53:24 UT
Galactic:	298.20° -58.42°
Galactic N_H:	2.52× 10²⁰ cm^-2
Galactic E(B-V):	0.02093772

Sun distance:	114.13°
Sun angle:	11.98 [hr](West of Sun)
Moon distance:	104.59°
Visibility of this field.

Data analysed so far:

ObsID: 00021860001 with 4.0 ks exposure.

About ToO analysis.

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Sources found so far

So far 8 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from MASTER pos	Exposure	Notes
1 [details]	01h 09m 51.03s17.46261°	-58° 37′ 07.8″-58.61882°	7.4′′	Good	6.7′	4.0 ks	Matches SIMBAD source: UCAC2 5988627, 3.4″ away.
Mean XRT rate: 4.8 (+1.5, -1.3) ×10^-3 ct s^-1 Peak XRT rate: 4.8 (+1.5, -1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.06 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.6 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	01h 10m 59.94s17.74976°	-58° 38′ 40.4″-58.64457°	6.6′′	Good	7.9′	4.0 ks
Mean XRT rate: 3.0 (+1.3, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 3.0 (+1.3, -1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.4 (+3.2, -2.5) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 7.4 (+3.2, -2.5) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	01h 10m 33.32s17.63883°	-58° 29′ 25.3″-58.49036°	6.1′′	Good	2.9′	4.0 ks
Mean XRT rate: 2.38 (+1.13, -0.87) ×10^-3 ct s^-1 Peak XRT rate: 2.38 (+1.13, -0.87) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 10 (+5, -4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 10 (+5, -4) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	01h 10m 34.14s17.64223°	-58° 31′ 56.1″-58.53225°	5.8′′	Good	1.1′	4.0 ks
Mean XRT rate: 4.0 (+1.4, -1.1) ×10^-3 ct s^-1 Peak XRT rate: 4.0 (+1.4, -1.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.1 (+0.4, -0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.1 (+0.4, -0.3) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	01h 10m 47.98s17.69990°	-58° 34′ 48.9″-58.58025°	7.1′′	Good	3.9′	4.0 ks
Mean XRT rate: 5.2 (+1.7, -1.4) ×10^-3 ct s^-1 Peak XRT rate: 5.2 (+1.7, -1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.5 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
6 [details]	01h 11m 34.52s17.89384°	-58° 31′ 42.9″-58.52858°	6.4′′	Reasonable	9.0′	4.0 ks
Mean XRT rate: 1.99 (+1.13, -0.83) ×10^-3 ct s^-1 Peak XRT rate: 1.99 (+1.13, -0.83) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 847685.25 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.6 (+2.6, -1.9) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 4.6 (+2.6, -1.9) ×10^-11 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
7 [details]	01h 11m 14.27s17.80946°	-58° 26′ 37.5″-58.44376°	9.0′′	Poor	8.4′	4.0 ks
Mean XRT rate: 1.65 (+1.06, -0.75) ×10^-3 ct s^-1 Peak XRT rate: 1.65 (+1.06, -0.75) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
8 [details]	01h 10m 15.18s17.56327°	-58° 28′ 53.3″-58.48146°	6.5′′	Good	3.6′	4.0 ks
Mean XRT rate: 2.84 (+1.23, -0.97) ×10^-3 ct s^-1 Peak XRT rate: 2.84 (+1.23, -0.97) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.08 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.0 (+0.9, -0.7) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.0 (+0.9, -0.7) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 1SXPS documentation.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

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Exposure map

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FITS exposure map.