ASTROSAT CZTI

Data Quality Report

Orbit 03948

Creation date: 2024-06-27T14:35:34.405414
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/AS1G05_172T01_9000000502_03948cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03948cztM0_level2_quad_clean.evt
Size (bytes)425,064,96064,710,720
Size405.4 MB 61.7 MB
Events in quadrant A3,319,324398,191
Events in quadrant B2,800,756399,823
Events in quadrant C2,764,397394,458
Events in quadrant D3,599,568366,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136121
B0121651
C0122191
D0149571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57211622.831673%
B5721280.489425%
C5721460.804055%
D57213506.117812%

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 6806 5722 95 95 1.40% 1.66%
B 6806 5722 2 2 0.03% 0.03%
C 6806 5722 33 33 0.48% 0.58%
D 6806 5722 351 351 5.16% 6.13%

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 0 118 464957 3448.39 647 633 134.6
A 8 15 210271 1556.92 647 633 134.6
A 0 199 51218 375.68 647 633 134.6
B 10 16 74322 580.15 662 647 127.0
B 3 0 48122 373.84 662 647 127.0
B 15 204 40033 310.14 662 647 127.0
C 8 208 130053 886.56 624 627 146.0
C 10 65 126207 860.22 624 627 146.0
C 1 16 30200 202.57 624 627 146.0
D 9 82 925177 6182.89 610 591 149.5
D 2 232 226721 1512.18 610 591 149.5
D 13 223 38578 254.03 610 591 149.5

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
Veto Counter