ASTROSAT CZTI

Data Quality Report

Orbit 28267

Creation date: 2024-06-27T19:49:49.968911
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_067T01_9000004076_28267cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28267cztM0_level2_quad_clean.evt
Size (bytes)687,159,360100,488,960
Size655.3 MB 95.8 MB
Events in quadrant A3,346,444696,142
Events in quadrant B3,990,870704,645
Events in quadrant C3,499,285662,328
Events in quadrant D9,525,387516,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142330
B0162100
C0146700
D0327670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6634360.542659%
B66341942.924329%
C66341061.597829%
D6635222933.594574%

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 8919 6636 5 5 0.06% 0.08%
B 8919 6636 116 116 1.30% 1.75%
C 8919 6636 10 10 0.11% 0.15%
D 8920 6635 2151 2151 24.11% 32.42%

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 12 96 20270 113.05 863 848 171.8
A 13 254 11271 60.67 863 848 171.8
A 3 137 8143 42.46 863 848 171.8
B 10 245 613967 3780.79 855 836 162.2
B 12 111 19966 117.96 855 836 162.2
B 11 111 17924 105.37 855 836 162.2
C 14 238 134900 689.5 827 835 194.4
C 3 233 79460 404.37 827 835 194.4
C 2 16 48372 244.48 827 835 194.4
D 1 52 6141901 37171.45 695 677 165.2
D 8 195 547337 3308.81 695 677 165.2
D 2 250 118796 714.95 695 677 165.2

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