ASTROSAT CZTI

Data Quality Report

Orbit 39654

Creation date: 2024-06-27T22:07:22.221794
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/AS1A12_018T01_9000005488_39654cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39654cztM0_level2_quad_clean.evt
Size (bytes)566,628,48093,542,400
Size540.4 MB 89.2 MB
Events in quadrant A5,428,249639,867
Events in quadrant B2,747,458661,813
Events in quadrant C8,290,497530,632
Events in quadrant D4,049,132585,262

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202783
B0123972
C0286912
D0164062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59331863.135008%
B5933240.404517%
C5933136022.922636%
D59331682.831620%

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 7306 5934 96 96 1.31% 1.62%
B 7306 5934 12 12 0.16% 0.20%
C 7306 5934 1259 1259 17.23% 21.22%
D 7306 5934 215 215 2.94% 3.62%

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 15 222 2466006 19426.89 624 610 126.9
A 10 83 477462 3757.51 624 610 126.9
A 6 10 37009 286.82 624 610 126.9
B 4 251 142582 1174.43 627 609 120.9
B 5 172 48155 393.31 627 609 120.9
B 5 255 45818 373.98 627 609 120.9
C 15 208 5179041 38629.27 575 579 134.1
C 9 187 497433 3706.33 575 579 134.1
C 15 214 232585 1730.67 575 579 134.1
D 12 227 1363895 9164.19 611 592 148.8
D 1 52 152115 1018.54 611 592 148.8
D 13 249 79622 531.24 611 592 148.8

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