ASTROSAT CZTI

Data Quality Report

Orbit 52586

Creation date: 2025-06-19T10:07:38.213057
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T06_9000006478_52586cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52586cztM0_level2_quad_clean.evt
Size (bytes)627,459,84092,082,240
Size598.4 MB 87.8 MB
Events in quadrant A3,889,829640,970
Events in quadrant B6,037,367594,828
Events in quadrant C6,449,394549,779
Events in quadrant D6,313,616520,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169632
B0228192
C0240006
D0237832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69122012.907986%
B6912110716.015625%
C691197014.035595%
D691186012.443930%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7927 6912 181 181 2.28% 2.62%
B 7927 6912 1018 1018 12.84% 14.73%
C 7926 6911 822 822 10.37% 11.89%
D 7926 6911 760 760 9.59% 11.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 80 520102 2951.9 702 684 176.0
A 4 249 317653 1801.36 702 684 176.0
A 5 243 81652 460.15 702 684 176.0
B 10 44 2190966 16211.01 643 619 135.1
B 1 238 646854 4782.86 643 619 135.1
B 10 254 182540 1346.42 643 619 135.1
C 15 248 1909950 10602.97 645 637 180.1
C 13 3 751136 4167.74 645 637 180.1
C 15 178 345146 1913.16 645 637 180.1
D 15 125 2468579 13187.86 643 614 187.1
D 8 176 297911 1588.64 643 614 187.1
D 3 224 267904 1428.3 643 614 187.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter