ASTROSAT CZTI

Data Quality Report

Orbit 29902

Creation date: 2024-06-27T20:08:41.816003
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/AS1A10_102T10_9000004282_29902cztM0_level2.evt modeM0/AS1A10_102T10_9000004282_29902cztM0_level2_quad_clean.evt
Size (bytes)600,641,280103,613,760
Size572.8 MB 98.8 MB
Events in quadrant A3,428,976691,259
Events in quadrant B5,130,199690,225
Events in quadrant C4,689,658659,264
Events in quadrant D4,495,005636,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141102
B0199672
C0185242
D0174032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601961.454325%
B66021111.681309%
C66023024.574371%
D66023865.846713%

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 7646 6602 18 18 0.24% 0.27%
B 7647 6603 0 0 0.00% 0.00%
C 7647 6603 22 22 0.29% 0.33%
D 7647 6603 277 277 3.62% 4.20%

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 15 174 86924 495.52 864 849 173.7
A 13 254 11424 60.88 864 849 173.7
A 8 192 10186 53.75 864 849 173.7
B 6 159 1787769 10952.0 849 828 163.2
B 12 111 20327 119.51 849 828 163.2
B 11 111 18548 108.6 849 828 163.2
C 3 233 1203901 6352.38 810 817 189.4
C 14 238 190647 1002.32 810 817 189.4
C 14 254 84272 440.65 810 817 189.4
D 7 238 902734 4621.66 818 796 195.2
D 8 195 270416 1381.57 818 796 195.2
D 2 250 130805 666.19 818 796 195.2

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