ASTROSAT CZTI

Data Quality Report

Orbit 02822

Creation date: 2024-06-27T14:22:05.341860
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/AS1P01_999T99_9000000410_02822cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02822cztM0_level2_quad_clean.evt
Size (bytes)1,594,290,24057,991,680
Size1.5 GB 55.3 MB
Events in quadrant A8,263,746401,205
Events in quadrant B11,079,111401,659
Events in quadrant C12,168,455345,750
Events in quadrant D16,416,123222,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284382
B0367411
C0402261
D0534401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54651973.604758%
B54653356.129918%
C5465166830.521500%
D5465489089.478500%

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 6730 5466 846 846 12.57% 15.48%
B 6730 5466 2514 2514 37.36% 45.99%
C 6730 5465 2906 2906 43.18% 53.17%
D 6730 5466 5323 5323 79.09% 97.38%

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 13 475342 1072.54 1915 1899 441.4
A 0 31 181455 406.77 1915 1899 441.4
A 0 50 125687 280.43 1915 1899 441.4
B 0 191 1060281 2296.76 1983 1958 460.8
B 1 158 1057574 2290.88 1983 1958 460.8
B 3 10 328624 708.93 1983 1958 460.8
C 0 219 2034638 4228.04 1647 1695 480.8
C 1 16 1250091 2596.37 1647 1695 480.8
C 1 192 1125723 2337.71 1647 1695 480.8
D 0 11 6920993 21205.57 1087 1101 326.3
D 0 226 4211232 12901.68 1087 1101 326.3
D 1 31 234990 716.74 1087 1101 326.3

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