ASTROSAT CZTI

Data Quality Report

Orbit 57522

Creation date: 2026-05-16T13:11:43.486729
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/AS1A14_113T09_9000006574_57522cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57522cztM0_level2_quad_clean.evt
Size (bytes)471,873,60088,436,160
Size450.0 MB 84.3 MB
Events in quadrant A2,815,921603,442
Events in quadrant B3,841,550623,464
Events in quadrant C6,643,916505,377
Events in quadrant D3,701,126527,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127531
B0154765
C0238781
D0150921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5980731.220736%
B59802323.879599%
C5980103817.357860%
D59802564.280936%

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 6995 5981 11 11 0.16% 0.18%
B 6995 5981 91 91 1.30% 1.52%
C 6995 5981 760 760 10.86% 12.71%
D 6995 5981 173 173 2.47% 2.89%

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 7 14 148404 896.26 664 648 164.9
A 3 14 87936 529.47 664 648 164.9
A 3 137 7854 43.71 664 648 164.9
B 4 206 514178 3797.52 642 620 135.2
B 5 185 440986 3256.3 642 620 135.2
B 10 247 119992 882.7 642 620 135.2
C 15 224 3695097 22272.02 605 600 165.9
C 1 16 266326 1601.91 605 600 165.9
C 6 223 219096 1317.19 605 600 165.9
D 0 19 302466 1675.18 635 606 180.2
D 2 31 297482 1647.52 635 606 180.2
D 15 142 222187 1229.67 635 606 180.2

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