ASTROSAT CZTI

Data Quality Report

Orbit 58444

Creation date: 2026-07-17T14:26:52.949565
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_045T01_9000006590_58444cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58444cztM0_level2_quad_clean.evt
Size (bytes)462,378,240114,575,040
Size441.0 MB 109.3 MB
Events in quadrant A3,862,600743,480
Events in quadrant B4,265,985795,328
Events in quadrant C4,419,214703,792
Events in quadrant D3,949,425674,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171891
B0182381
C0189651
D0174211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79491852.327337%
B79493194.013083%
C79493314.164046%
D7949921.157378%

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 8034 7949 34 34 0.42% 0.43%
B 8034 7949 141 141 1.76% 1.77%
C 8034 7949 199 199 2.48% 2.50%
D 8034 7949 17 17 0.21% 0.21%

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 10 248 156409 705.43 895 871 220.5
A 4 249 79506 356.64 895 871 220.5
A 12 80 50666 225.84 895 871 220.5
B 4 201 458235 2433.02 876 841 188.0
B 5 172 134367 710.27 876 841 188.0
B 7 252 36671 190.59 876 841 188.0
C 5 10 493844 2114.67 853 842 233.1
C 14 245 260752 1114.85 853 842 233.1
C 1 12 186579 796.69 853 842 233.1
D 2 249 161839 667.81 864 828 241.1
D 11 129 117614 484.38 864 828 241.1
D 2 120 76308 313.06 864 828 241.1

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