ASTROSAT CZTI

Data Quality Report

Orbit 58224

Creation date: 2026-07-03T10:19:18.341172
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_58224cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58224cztM0_level2_quad_clean.evt
Size (bytes)578,508,48098,421,120
Size551.7 MB 93.9 MB
Events in quadrant A3,269,298677,465
Events in quadrant B8,444,806607,405
Events in quadrant C3,889,997640,923
Events in quadrant D5,264,441565,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147381
B0299911
C0166091
D0204771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70321001.422071%
B7033142220.218968%
C70331582.246552%
D70335798.232618%

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 7922 7032 16 16 0.20% 0.23%
B 7923 7033 1131 1131 14.27% 16.08%
C 7923 7033 119 119 1.50% 1.69%
D 7923 7033 495 495 6.25% 7.04%

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 10 251 57315 295.35 775 755 191.5
A 3 14 43031 220.76 775 755 191.5
A 13 248 36523 186.77 775 755 191.5
B 10 128 1947544 12892.14 712 687 151.0
B 0 171 1455113 9631.25 712 687 151.0
B 2 249 554887 3669.93 712 687 151.0
C 1 13 269761 1318.45 746 737 204.0
C 1 241 227081 1109.29 746 737 204.0
C 6 223 178766 872.5 746 737 204.0
D 8 160 923521 4519.13 722 691 204.2
D 6 239 474277 2319.17 722 691 204.2
D 8 240 234612 1145.52 722 691 204.2

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