ASTROSAT CZTI

Data Quality Report

Orbit 58265

Creation date: 2026-07-05T13:12:33.409269
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_58265cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58265cztM0_level2_quad_clean.evt
Size (bytes)525,225,60087,298,560
Size500.9 MB 83.3 MB
Events in quadrant A3,870,567569,322
Events in quadrant B4,249,523620,935
Events in quadrant C3,020,434562,129
Events in quadrant D7,830,466466,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157791
B0167171
C0135911
D0274471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60724106.752306%
B60733325.466820%
C60731893.112136%
D607394415.544212%

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 7222 6073 277 277 3.84% 4.56%
B 7223 6073 171 171 2.37% 2.82%
C 7223 6074 108 108 1.50% 1.78%
D 7223 6074 919 919 12.72% 15.13%

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 8 26 1092156 6708.17 663 647 162.7
A 4 238 38440 232.27 663 647 162.7
A 3 245 27382 164.31 663 647 162.7
B 2 249 576092 4116.87 657 633 139.8
B 4 206 239231 1706.95 657 633 139.8
B 0 156 221645 1581.13 657 633 139.8
C 12 249 285783 1588.14 646 641 179.5
C 1 27 102128 565.25 646 641 179.5
C 14 96 15517 82.85 646 641 179.5
D 12 110 4613765 26616.64 611 582 173.3
D 8 160 280456 1614.78 611 582 173.3
D 14 49 176065 1012.48 611 582 173.3

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