ASTROSAT CZTI

Data Quality Report

Orbit 55680

Creation date: 2026-01-13T13:07:29.581158
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_099T04_9000006540_55680cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55680cztM0_level2_quad_clean.evt
Size (bytes)397,056,96088,358,400
Size378.7 MB 84.3 MB
Events in quadrant A4,815,440538,043
Events in quadrant B2,751,117619,524
Events in quadrant C2,948,742563,585
Events in quadrant D3,697,151519,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188041
B0131171
C0136741
D0154462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62325629.017972%
B62331332.133804%
C6233671.074924%
D62321722.759949%

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 7207 6233 392 392 5.44% 6.29%
B 7208 6234 15 15 0.21% 0.24%
C 7208 6234 31 31 0.43% 0.50%
D 7207 6233 111 111 1.54% 1.78%

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 12 115 1163741 7482.55 628 612 155.4
A 0 8 469943 3019.26 628 612 155.4
A 15 32 340155 2184.32 628 612 155.4
B 0 171 94609 679.3 641 616 138.4
B 5 172 88172 632.78 641 616 138.4
B 12 111 16829 117.17 641 616 138.4
C 10 19 169032 967.67 629 623 174.0
C 9 38 136256 779.34 629 623 174.0
C 13 3 58381 331.88 629 623 174.0
D 11 129 811766 4613.03 624 598 175.8
D 15 234 201680 1143.53 624 598 175.8
D 10 181 135153 765.2 624 598 175.8

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