ASTROSAT CZTI

Data Quality Report

Orbit 20210508_A10_053T14_9000004362_level2

Creation date: 2021-05-13T17:10:02.381557
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_053T14_9000004362cztM0_level2_bc.evt modeM0/AS1A10_053T14_9000004362cztM0_level2_quad_clean.evt
Size (bytes)2,324,050,560750,087,360
Size2.2 GB 715.3 MB
Events in quadrant A11,940,5384,859,128
Events in quadrant B25,938,1914,871,119
Events in quadrant C12,157,3744,724,765
Events in quadrant D16,769,0594,657,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010700
B010700
C010700
D010700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01123890
B01597190
C01148440
D01296340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525717051.341044%
B5257114122.685891%
C5257114642.784805%
D5257128925.501132%

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 60131 52575 0 0 0.00% 0.00%
B 60131 52569 1 1 0.00% 0.00%
C 60131 52567 0 0 0.00% 0.00%
D 60131 52572 575 575 0.96% 1.09%

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 5 203 635393 1015.29 2900 2853 623.0
A 13 254 94107 146.47 2900 2853 623.0
A 8 192 94085 146.44 2900 2853 623.0
B 6 159 14492296 26620.11 2907 2845 544.3
B 3 209 97711 174.29 2907 2845 544.3
B 0 190 68847 121.26 2907 2845 544.3
C 3 233 1191512 1819.77 2795 2787 653.2
C 2 114 100171 149.08 2795 2787 653.2
C 14 254 81970 121.22 2795 2787 653.2
D 13 104 1407151 2157.94 2780 2704 650.8
D 1 52 1363464 2090.82 2780 2704 650.8
D 12 233 940182 1440.44 2780 2704 650.8

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