ASTROSAT CZTI

Data Quality Report

Orbit 03779

Creation date: 2024-06-27T14:33:34.040806
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/AS1G05_248T01_9000000486_03779cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03779cztM0_level2_quad_clean.evt
Size (bytes)576,213,12080,231,040
Size549.5 MB 76.5 MB
Events in quadrant A4,085,740508,084
Events in quadrant B4,087,070513,152
Events in quadrant C3,716,194503,554
Events in quadrant D5,148,976478,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161392
B0161431
C0151931
D0194161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61034497.357038%
B61033265.341635%
C61031843.014911%
D61033295.390791%

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 7158 6104 213 213 2.98% 3.49%
B 7158 6104 120 120 1.68% 1.97%
C 7158 6104 56 56 0.78% 0.92%
D 7158 6104 211 211 2.95% 3.46%

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 13 251 781571 5362.66 717 699 145.6
A 0 50 175438 1200.03 717 699 145.6
A 0 118 170799 1168.17 717 699 145.6
B 0 173 1050310 7371.02 735 716 142.4
B 15 204 124289 867.82 735 716 142.4
B 0 229 16022 107.49 735 716 142.4
C 2 53 934002 5715.49 708 710 163.3
C 1 16 7500 41.58 708 710 163.3
C 13 61 6001 32.4 708 710 163.3
D 1 84 1684099 9942.97 705 684 169.3
D 8 112 513567 3029.3 705 684 169.3
D 13 137 64568 377.32 705 684 169.3

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