ASTROSAT CZTI

Data Quality Report

Orbit 58358

Creation date: 2026-07-11T20:14:24.869983
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_044T03_9000006588_58358cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58358cztM0_level2_quad_clean.evt
Size (bytes)853,459,20080,683,200
Size813.9 MB 76.9 MB
Events in quadrant A3,835,638669,026
Events in quadrant B6,732,067676,539
Events in quadrant C16,226,756519
Events in quadrant D4,236,757594,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01442
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165949
B02500248
C05315298
D01745810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72181572.175118%
B72137199.968113%
C7208720599.958380%
D72162383.298226%

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 7229 7220 125 125 1.73% 1.73%
B 7229 7219 496 496 6.86% 6.87%
C 7229 7207 5878 5878 81.31% 81.56%
D 7230 7220 224 224 3.10% 3.10%

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 471695 2463.67 778 760 191.2
A 3 62 65469 338.52 778 760 191.2
A 5 242 52303 269.64 778 760 191.2
B 10 128 1725259 10622.98 752 725 162.3
B 6 255 778799 4792.87 752 725 162.3
B 0 213 596636 3670.76 752 725 162.3
C 15 148 15683197 462250.56 117 116 33.9
C 12 252 33768 991.87 117 116 33.9
C 4 5 11821 345.0 117 116 33.9
D 2 249 801199 3718.88 753 719 215.2
D 11 129 108122 498.97 753 719 215.2
D 2 120 101552 468.45 753 719 215.2

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