ASTROSAT CZTI

Data Quality Report

Orbit 24769

Creation date: 2024-06-27T19:09:41.261504
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/AS1A07_147T01_9000003624_24769cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24769cztM0_level2_quad_clean.evt
Size (bytes)562,403,52094,446,720
Size536.3 MB 90.1 MB
Events in quadrant A3,561,315612,659
Events in quadrant B4,194,774612,335
Events in quadrant C5,171,768570,641
Events in quadrant D3,629,045576,147

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147282
B0168492
C0196682
D0150432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70051432.041399%
B70052072.955032%
C700575510.778016%
D7005991.413276%

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 7760 7006 0 0 0.00% 0.00%
B 7760 7006 17 17 0.22% 0.24%
C 7760 7006 161 161 2.07% 2.30%
D 7760 7006 4 4 0.05% 0.06%

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 29921 157.97 913 894 183.7
A 12 96 14928 76.38 913 894 183.7
A 13 254 8756 42.79 913 894 183.7
B 3 64 528737 3046.55 895 874 173.3
B 10 246 106750 611.06 895 874 173.3
B 0 230 27383 153.0 895 874 173.3
C 7 247 1723626 8754.84 845 851 196.8
C 14 238 133317 673.17 845 851 196.8
C 10 91 13464 64.1 845 851 196.8
D 8 195 158348 732.76 882 858 214.9
D 12 233 71818 330.16 882 858 214.9
D 1 52 66430 305.09 882 858 214.9

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