ASTROSAT CZTI

Data Quality Report

Orbit 20220425_A11_093T01_9000005090_level2

Creation date: 2026-01-02T11:00:22.894395
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/AS1A11_093T01_9000005090cztM0_level2.fits modeM0/AS1A11_093T01_9000005090cztM0_level2_quad_clean.evt
Size (bytes)497,960,640484,568,640
Size474.9 MB 462.1 MB
Events in quadrant A2,127,1861,883,016
Events in quadrant B3,091,9203,070,661
Events in quadrant C3,239,7343,104,668
Events in quadrant D2,770,9022,777,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011420
C011420
D011420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02692930
B01332330
C01246110
D01363180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B02110
C02110
D02110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559532417143.198756%
B5595319683.517238%
C559537831.399389%
D5595314622.612907%

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 77075 52704 0 0 0.00% 0.00%
B 77075 55950 0 0 0.00% 0.00%
C 77075 55946 0 0 0.00% 0.00%
D 77075 55941 0 0 0.00% 0.00%

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 7 110 1748 8.86 554 523 138.3
A 9 19 1738 8.79 554 523 138.3
A 0 29 1644 8.11 554 523 138.3
B 2 9 2637 11.62 818 783 159.5
B 3 80 2356 9.86 818 783 159.5
B 2 8 2180 8.76 818 783 159.5
C 1 81 2661 8.47 855 808 218.7
C 1 80 2639 8.37 855 808 218.7
C 3 203 2630 8.33 855 808 218.7
D 10 189 2054 6.29 792 726 210.9
D 10 113 2034 6.2 792 726 210.9
D 3 14 2030 6.18 792 726 210.9

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