ASTROSAT CZTI

Data Quality Report

Orbit 54797

Creation date: 2025-11-14T05:50:52.494925
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_103T01_9000006524_54797cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54797cztM0_level2_quad_clean.evt
Size (bytes)481,870,080115,836,480
Size459.5 MB 110.5 MB
Events in quadrant A3,348,288757,163
Events in quadrant B3,821,856806,037
Events in quadrant C5,162,614706,546
Events in quadrant D4,871,769671,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166233
B01749115
C0214040
D0208117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8143130.159646%
B8135610.749846%
C81462282.798920%
D81421982.431835%

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 8145 8144 1 1 0.01% 0.01%
B 8145 8140 18 18 0.22% 0.22%
C 8146 8146 195 195 2.39% 2.39%
D 8145 8144 200 200 2.46% 2.46%

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 3 14 25984 119.11 842 821 211.3
A 13 254 17498 78.94 842 821 211.3
A 8 246 17226 77.66 842 821 211.3
B 2 249 268571 1484.94 833 805 180.3
B 5 185 111456 613.63 833 805 180.3
B 10 247 80052 439.48 833 805 180.3
C 9 38 1196246 5364.02 808 798 222.9
C 6 223 237701 1062.99 808 798 222.9
C 14 254 204324 913.23 808 798 222.9
D 3 12 840991 3679.37 803 769 228.4
D 8 240 275793 1204.34 803 769 228.4
D 14 52 120874 525.95 803 769 228.4

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