GRB 210323B: Swift observation summary

Mission:	Swift/BAT
GRB RA:	259.664°
GRB Dec:	+15.677°
GRB Err:	6.0 arcmin
T0:	2021-03-23 12:03:33 UT
Galactic:	37.30° +27.43°
Galactic N_H:	6.19× 10²⁰ cm^-2
Galactic E(B-V):	0.08382528

Sun distance:	102.32°
Sun angle:	6.88 [hr] (West of Sun)
Moon distance:	125.61°
Visibility of this field.

Data analysed so far:

ObsID: 00021426001 with 5.0 ks exposure.

About ToO analysis.

Find an upper limit.

Sources found so far

So far 8 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure
1 [details]	17h 18m 44.80s259.68665°	+15° 38′ 02.2″15.63394°	4.6′′	Good	2.9′	10.3 ks
Mean XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	17h 18m 09.25s259.53853°	+15° 36′ 09.0″15.60250°	3.8′′	Good	8.5′	10.3 ks
Mean XRT rate: 4.4 (+0.9, -0.8) ×10^-3 ct s^-1 Peak XRT rate: 5.5 (±1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.59 (+0.33, -0.30) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.0 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	17h 19m 14.68s259.81115°	+15° 39′ 20.1″15.65558°	5.0′′	Reasonable	8.6′	10.3 ks
Mean XRT rate: 1.3 (+0.8, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 1.3 (+0.8, -0.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.13 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.8 (+3.0, -2.2) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 4.8 (+3.0, -2.2) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	17h 19m 10.74s259.79473°	+15° 37′ 10.9″15.61970°	5.6′′	Good	8.3′	8.8 ks
Mean XRT rate: 3.5 (+1.4, -1.2) ×10^-3 ct s^-1 Peak XRT rate: 3.5 (+1.4, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.1 (+2.5, -2.0) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.1 (+2.5, -2.0) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.4 [What is this?]
5 [details]	17h 19m 22.96s259.84567°	+15° 37′ 17.5″15.62154°	5.4′′	Good	11.0′	10.3 ks
Mean XRT rate: 4.7 (±0.9) ×10^-3 ct s^-1 Peak XRT rate: 5.9 (±1.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.8 (+0.4, -0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.2 (±0.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.5 [What is this?]
6 [details]	17h 19m 19.35s259.83064°	+15° 45′ 32.5″15.75903°	5.9′′	Poor	10.8′	10.3 ks
Mean XRT rate: 1.3 (+0.9, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 1.3 (+0.9, -0.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.9 [What is this?]
7 [details]	17h 18m 09.08s259.53784°	+15° 35′ 18.3″15.58842°	4.4′′	Reasonable	9.0′	8.6 ks
Mean XRT rate: 1.7 (+0.9, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+0.9, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.4 (+2.9, -2.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 5.4 (+2.9, -2.2) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.5 [What is this?]
8 [details]	17h 18m 14.19s259.55912°	+15° 39′ 09.8″15.65273°	3.6′′	Good	6.2′	10.3 ks
Mean XRT rate: 7.1 (+1.2, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 1.16 (±0.27) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.6 (±0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 4.2 (±1.0) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.08 [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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FITS exposure map.