ASTROSAT CZTI

Data Quality Report

Orbit 17748

Creation date: 2024-06-27T17:40:25.874400
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/AS1T03_070T05_9000002640_17748cztM0_level2.evt modeM0/AS1T03_070T05_9000002640_17748cztM0_level2_quad_clean.evt
Size (bytes)453,752,64071,421,120
Size432.7 MB 68.1 MB
Events in quadrant A3,180,998433,790
Events in quadrant B3,426,644431,031
Events in quadrant C3,242,845419,790
Events in quadrant D3,431,812406,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138681
B0145121
C0138871
D0150202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6765540.798226%
B67651241.832964%
C6765761.123429%
D67641712.528090%

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 7665 6766 0 0 0.00% 0.00%
B 7665 6766 65 65 0.85% 0.96%
C 7665 6766 0 0 0.00% 0.00%
D 7664 6765 109 109 1.42% 1.61%

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 15 191 27322 161.06 817 799 164.7
A 15 174 11724 66.34 817 799 164.7
A 0 226 7118 38.37 817 799 164.7
B 10 245 202557 1308.58 811 793 154.2
B 0 230 26861 169.07 811 793 154.2
B 12 111 18386 114.1 811 793 154.2
C 14 238 122410 658.12 788 796 184.8
C 5 218 24340 127.41 788 796 184.8
C 1 16 11625 58.6 788 796 184.8
D 10 70 177306 871.52 779 762 202.6
D 7 38 168611 828.59 779 762 202.6
D 5 222 37354 180.64 779 762 202.6

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