ASTROSAT CZTI

Data Quality Report

Orbit 20934

Creation date: 2024-06-27T18:21:24.203016
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_025T17_9000003084_20934cztM0_level2.evt modeM0/AS1A05_025T17_9000003084_20934cztM0_level2_quad_clean.evt
Size (bytes)537,840,000132,696,000
Size512.9 MB 126.5 MB
Events in quadrant A3,502,161881,183
Events in quadrant B3,726,501886,567
Events in quadrant C3,679,301877,935
Events in quadrant D4,865,613845,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154851
B0158761
C0157741
D0193771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75821702.242152%
B75831852.439668%
C75831982.611104%
D75833174.180404%

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 7892 7583 0 0 0.00% 0.00%
B 7893 7584 4 4 0.05% 0.05%
C 7893 7584 0 0 0.00% 0.00%
D 7893 7584 132 132 1.67% 1.74%

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 0 226 7867 38.11 909 889 183.1
A 3 137 7515 36.19 909 889 183.1
A 15 174 7453 35.85 909 889 183.1
B 7 220 49769 288.28 902 880 169.6
B 3 64 47019 272.06 902 880 169.6
B 0 229 43142 249.2 902 880 169.6
C 14 238 138094 674.54 880 884 203.4
C 10 91 110822 540.47 880 884 203.4
C 13 61 6014 25.22 880 884 203.4
D 1 52 584913 2737.58 888 863 213.3
D 1 20 537934 2517.38 888 863 213.3
D 6 143 235752 1100.98 888 863 213.3

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter