ASTROSAT CZTI

Data Quality Report

Orbit 55422

Creation date: 2025-12-26T07:49:46.022628
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_099T01_9000006536_55422cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55422cztM0_level2_quad_clean.evt
Size (bytes)854,179,20098,418,240
Size814.6 MB 93.9 MB
Events in quadrant A4,423,916703,924
Events in quadrant B4,816,945759,965
Events in quadrant C4,396,273672,080
Events in quadrant D17,321,866253,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196801
B0204080
C0196820
D0572520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85002162.541176%
B85012022.376191%
C85011551.823315%
D8501554965.274674%

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 8768 8768 152 152 1.73% 1.73%
B 8769 8769 127 127 1.45% 1.45%
C 8769 8769 99 99 1.13% 1.13%
D 8769 8709 4886 4886 55.72% 56.10%

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 0 8 554724 2513.69 886 865 220.3
A 4 159 229181 1036.21 886 865 220.3
A 7 14 47721 212.66 886 865 220.3
B 12 32 510114 2740.8 880 850 185.8
B 7 252 346889 1862.34 880 850 185.8
B 5 236 191840 1027.89 880 850 185.8
C 13 3 628824 2616.81 874 866 240.0
C 15 148 113496 469.35 874 866 240.0
C 15 178 55694 228.48 874 866 240.0
D 11 129 13110654 79695.62 572 546 164.5
D 8 48 396607 2407.63 572 546 164.5
D 2 249 318199 1931.0 572 546 164.5

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