ASTROSAT CZTI

Data Quality Report

Orbit 30018

Creation date: 2024-06-27T20:09:56.490867
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/AS1A10_071T03_9000004314_30018cztM0_level2.evt modeM0/AS1A10_071T03_9000004314_30018cztM0_level2_quad_clean.evt
Size (bytes)498,980,16079,545,600
Size475.9 MB 75.9 MB
Events in quadrant A3,054,857508,515
Events in quadrant B4,814,227510,306
Events in quadrant C3,050,943484,385
Events in quadrant D3,769,621471,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127681
B0187831
C0128051
D0154371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217190.305614%
B6218681.093599%
C6218590.948858%
D62181382.219363%

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 7302 6218 2 2 0.03% 0.03%
B 7303 6219 2 2 0.03% 0.03%
C 7303 6219 0 0 0.00% 0.00%
D 7303 6218 92 92 1.26% 1.48%

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 5 203 27142 168.86 781 767 156.2
A 13 254 11704 70.02 781 767 156.2
A 8 192 11506 68.76 781 767 156.2
B 6 159 1741489 11786.07 771 754 147.7
B 10 247 23525 154.18 771 754 147.7
B 12 111 18525 120.32 771 754 147.7
C 14 238 127957 729.81 742 748 174.3
C 2 114 14220 77.29 742 748 174.3
C 14 254 11231 60.14 742 748 174.3
D 7 80 641013 3671.54 737 722 174.4
D 8 195 179288 1023.93 737 722 174.4
D 7 223 119058 678.56 737 722 174.4

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