ASTROSAT CZTI

Data Quality Report

Orbit 23129

Creation date: 2024-06-27T18:50:15.314982
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/AS1T03_173T01_9000003416_23129cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23129cztM0_level2_quad_clean.evt
Size (bytes)509,532,480121,743,360
Size485.9 MB 116.1 MB
Events in quadrant A3,728,999830,295
Events in quadrant B3,109,491864,656
Events in quadrant C4,774,618780,556
Events in quadrant D3,418,478800,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149741
B0131441
C0181781
D0142481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58852303.908241%
B5886731.240231%
C588679113.438668%
D58861402.378525%

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 7180 5886 150 150 2.09% 2.55%
B 7181 5886 2 2 0.03% 0.03%
C 7181 5887 402 402 5.60% 6.83%
D 7181 5887 92 92 1.28% 1.56%

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 6 16 781266 5225.5 759 746 149.4
A 2 79 15589 99.37 759 746 149.4
A 13 254 10067 62.4 759 746 149.4
B 0 190 57675 393.84 775 757 144.5
B 12 111 15793 104.04 775 757 144.5
B 11 111 13826 90.43 775 757 144.5
C 8 208 1733066 10550.5 720 728 164.2
C 14 238 115948 701.73 720 728 164.2
C 2 16 79749 481.26 720 728 164.2
D 2 82 210526 1165.3 754 734 180.0
D 13 153 82591 454.68 754 734 180.0
D 7 38 72295 397.49 754 734 180.0

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