ASTROSAT CZTI

Data Quality Report

Orbit 31517

Creation date: 2024-06-27T20:26:57.722630
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/AS1T04_025T01_9000004538_31517cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31517cztM0_level2_quad_clean.evt
Size (bytes)94,821,12020,707,200
Size90.4 MB 19.7 MB
Events in quadrant A647,652135,243
Events in quadrant B858,220140,198
Events in quadrant C565,929137,699
Events in quadrant D722,033129,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03713
B03816
C03816
D03816

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045782012
B059522660
C041051840
D049772165

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022
B122
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1099444.003640%
B1090151.376147%
C110930.270514%
D1105373.348416%

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 5687 1150 26 26 0.46% 2.26%
B 5690 1135 0 0 0.00% 0.00%
C 5691 1157 0 0 0.00% 0.00%
D 5694 1158 21 21 0.37% 1.81%

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 130945 4542.98 133 130 28.8
A 13 254 2019 65.6 133 130 28.8
A 3 137 1455 46.01 133 130 28.8
B 6 159 310083 10809.04 134 130 28.7
B 0 190 8663 297.57 134 130 28.7
B 0 230 5768 196.61 134 130 28.7
C 14 238 21891 655.54 133 133 33.2
C 3 233 20279 606.97 133 133 33.2
C 2 114 2512 71.68 133 133 33.2
D 12 79 137725 4094.46 131 127 33.6
D 8 195 42715 1267.28 131 127 33.6
D 2 250 30207 895.08 131 127 33.6

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