ASTROSAT CZTI

Data Quality Report

Orbit 18903

Creation date: 2024-06-27T17:56:19.887164
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/AS1A05_163T01_9000002820_18903cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18903cztM0_level2_quad_clean.evt
Size (bytes)621,345,60098,507,520
Size592.6 MB 93.9 MB
Events in quadrant A6,152,968579,946
Events in quadrant B5,301,763664,331
Events in quadrant C3,628,675650,859
Events in quadrant D3,297,858638,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224912
B0199802
C0146492
D0137802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6440107316.661491%
B644064610.031056%
C64401061.645963%
D6440250.388199%

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 7780 6441 618 618 7.94% 9.59%
B 7780 6441 392 392 5.04% 6.09%
C 7780 6441 5 5 0.06% 0.08%
D 7780 6441 6 6 0.08% 0.09%

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 14 235 3096874 19803.63 792 780 156.3
A 13 254 9783 57.59 792 780 156.3
A 0 226 7130 40.62 792 780 156.3
B 3 112 1850961 11908.32 826 809 155.4
B 0 245 86532 551.75 826 809 155.4
B 0 189 54943 348.43 826 809 155.4
C 3 233 229769 1216.27 817 824 188.2
C 14 238 130602 689.44 817 824 188.2
C 0 207 80040 420.83 817 824 188.2
D 9 1 93665 463.47 829 806 200.4
D 1 52 26896 130.22 829 806 200.4
D 2 234 26724 129.36 829 806 200.4

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