ASTROSAT CZTI

Data Quality Report

Orbit 18370

Creation date: 2024-06-27T17:48:57.139826
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/AS1A06_006T01_9000002724_18370cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18370cztM0_level2_quad_clean.evt
Size (bytes)496,468,80078,753,600
Size473.5 MB 75.1 MB
Events in quadrant A3,287,958488,739
Events in quadrant B3,820,367489,013
Events in quadrant C3,739,551479,243
Events in quadrant D3,742,464470,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136462
B0151882
C0149383
D0152592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562600.914355%
B65621622.468760%
C65611702.591068%
D65611392.118579%

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 7627 6563 1 1 0.01% 0.02%
B 7627 6563 49 49 0.64% 0.75%
C 7626 6562 63 63 0.83% 0.96%
D 7626 6562 66 66 0.87% 1.01%

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 4 2 18784 105.25 843 825 170.6
A 15 174 12772 70.02 843 825 170.6
A 11 29 12617 69.11 843 825 170.6
B 10 245 434054 2690.26 841 822 161.0
B 7 220 46960 286.51 841 822 161.0
B 12 111 18219 108.03 841 822 161.0
C 0 207 360131 1899.72 810 817 189.1
C 14 238 124728 655.13 810 817 189.1
C 3 233 99476 521.62 810 817 189.1
D 1 52 563864 2821.17 819 794 199.6
D 14 34 33624 164.49 819 794 199.6
D 2 234 28230 137.46 819 794 199.6

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