ASTROSAT CZTI

Data Quality Report

Orbit 17937

Creation date: 2024-06-27T17:42:50.897513
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_025T01_9000002670_17937cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17937cztM0_level2_quad_clean.evt
Size (bytes)542,957,760113,552,640
Size517.8 MB 108.3 MB
Events in quadrant A3,358,921746,059
Events in quadrant B3,581,790766,050
Events in quadrant C3,421,928732,715
Events in quadrant D5,585,807686,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151342
B0157182
C0151342
D0217842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7289380.521334%
B72891291.769790%
C72891261.728632%
D72896408.780354%

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 8944 7291 0 0 0.00% 0.00%
B 8944 7291 10 10 0.11% 0.14%
C 8944 7291 0 0 0.00% 0.00%
D 8944 7291 604 604 6.75% 8.28%

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 15 174 42988 241.57 858 840 174.5
A 13 210 10105 53.1 858 840 174.5
A 0 226 7291 36.97 858 840 174.5
B 0 197 91463 554.61 867 844 163.4
B 0 190 36409 217.67 867 844 163.4
B 12 111 19847 116.3 867 844 163.4
C 14 238 129027 656.95 835 837 195.1
C 3 233 25906 128.47 835 837 195.1
C 5 218 9025 41.96 835 837 195.1
D 7 238 1678814 8571.36 809 785 195.8
D 7 223 590617 3012.86 809 785 195.8
D 9 64 131910 669.79 809 785 195.8

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