ASTROSAT CZTI

Data Quality Report

Orbit 57629

Creation date: 2026-05-25T09:21:33.157025
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_070T08_9000006576_57629cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57629cztM0_level2_quad_clean.evt
Size (bytes)423,040,32094,726,080
Size403.4 MB 90.3 MB
Events in quadrant A3,260,206617,147
Events in quadrant B3,450,581654,756
Events in quadrant C3,873,202597,797
Events in quadrant D4,565,041541,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145341
B0148091
C0161361
D0181211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65611582.408169%
B65612453.734187%
C65611692.575827%
D65614066.188081%

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 6956 6562 9 9 0.13% 0.14%
B 6956 6562 54 54 0.78% 0.82%
C 6956 6562 78 78 1.12% 1.19%
D 6956 6562 217 217 3.12% 3.31%

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 7 64 395424 2272.07 707 689 173.7
A 4 249 66724 380.09 707 689 173.7
A 3 14 28678 161.1 707 689 173.7
B 10 247 248370 1691.36 692 667 146.5
B 0 213 91085 617.39 692 667 146.5
B 7 252 76377 516.96 692 667 146.5
C 15 224 611715 3269.59 684 676 186.9
C 12 252 430990 2302.55 684 676 186.9
C 14 254 81185 430.79 684 676 186.9
D 8 160 566433 2974.59 671 639 190.2
D 2 249 341511 1792.09 671 639 190.2
D 7 96 192814 1010.34 671 639 190.2

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