ASTROSAT CZTI

Data Quality Report

Orbit 20211229_A11_106T03_9000004826_level2

Creation date: 2022-01-03T17:20:53.966644
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/AS1A11_106T03_9000004826cztM0_level2_bc.evt modeM0/AS1A11_106T03_9000004826cztM0_level2_quad_clean.evt
Size (bytes)5,926,541,7601,496,361,600
Size5.5 GB 1.4 GB
Events in quadrant A30,466,3629,630,398
Events in quadrant B35,828,0669,536,835
Events in quadrant C36,534,6969,623,749
Events in quadrant D69,190,7408,990,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04160
B04160
C04160
D04170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022460
B022460
C022460
D022460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02559720
B02761040
C02631500
D03798950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11006517751.612683%
B11006545284.113933%
C11006513591.234725%
D11006564165.829283%

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 162793 110076 56 56 0.03% 0.05%
B 162793 110065 206 206 0.13% 0.19%
C 162793 110066 151 151 0.09% 0.14%
D 162793 110067 846 846 0.52% 0.77%

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 15 169 7236868 5667.16 5857 5773 1276.0
A 13 6 327648 252.26 5857 5773 1276.0
A 13 254 183902 139.6 5857 5773 1276.0
B 5 172 9405363 8225.89 5810 5697 1142.7
B 5 255 975945 849.09 5810 5697 1142.7
B 4 251 541287 468.71 5810 5697 1142.7
C 15 214 4485444 3470.6 5736 5707 1290.8
C 3 233 3115914 2409.58 5736 5707 1290.8
C 14 254 2798210 2163.44 5736 5707 1290.8
D 8 195 21661563 15536.67 5693 5540 1393.9
D 12 235 8898597 6380.14 5693 5540 1393.9
D 2 250 4987968 3574.54 5693 5540 1393.9

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