ASTROSAT CZTI

Data Quality Report

Orbit 14449

Creation date: 2024-06-27T16:55:19.992948
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/AS1G08_025T01_9000002130_14449cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14449cztM0_level2_quad_clean.evt
Size (bytes)546,940,80093,919,680
Size521.6 MB 89.6 MB
Events in quadrant A3,677,589596,802
Events in quadrant B4,560,740590,830
Events in quadrant C4,202,611585,373
Events in quadrant D3,647,782582,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155023
B0182202
C0169992
D0154652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70053294.696645%
B70055688.108494%
C70052383.397573%
D70052363.369022%

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 7141 7006 89 89 1.25% 1.27%
B 7141 7006 268 268 3.75% 3.83%
C 7141 7006 10 10 0.14% 0.14%
D 7141 7006 13 13 0.18% 0.19%

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 4 2 248626 1450.86 841 820 170.8
A 12 189 106523 618.87 841 820 170.8
A 8 15 84789 491.62 841 820 170.8
B 10 16 1175274 7432.74 825 803 158.0
B 0 189 66513 415.85 825 803 158.0
B 4 142 41143 255.3 825 803 158.0
C 3 233 936134 4971.33 809 811 188.1
C 0 207 103559 546.12 809 811 188.1
C 7 247 7782 37.05 809 811 188.1
D 12 110 128588 635.84 817 793 201.0
D 2 152 101657 501.85 817 793 201.0
D 13 122 94742 467.44 817 793 201.0

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