ASTROSAT CZTI

Data Quality Report

Orbit 20211205_A11_065T10_9000004800_level2

Creation date: 2021-12-11T20:19:22.993433
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_065T10_9000004800cztM0_level2_bc.evt modeM0/AS1A11_065T10_9000004800cztM0_level2_quad_clean.evt
Size (bytes)97,623,36029,361,600
Size93.1 MB 28.0 MB
Events in quadrant A392,727191,624
Events in quadrant B622,374188,569
Events in quadrant C552,148187,024
Events in quadrant D1,247,972178,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039660
B047330
C044390
D067340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195620.102249%
B1956361.840491%
C1956402.044990%
D1956924.703476%

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 3388 1956 0 0 0.00% 0.00%
B 3388 1956 3 3 0.09% 0.15%
C 3388 1956 1 1 0.03% 0.05%
D 3388 1956 7 7 0.21% 0.36%

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 7 192 4057 166.12 97 95 23.8
A 13 6 3996 163.57 97 95 23.8
A 13 254 3951 161.68 97 95 23.8
B 5 172 105003 4804.69 96 94 21.8
B 5 255 33389 1524.87 96 94 21.8
B 0 190 21057 960.08 96 94 21.8
C 15 214 82307 3465.52 93 91 23.7
C 0 10 57641 2425.82 93 91 23.7
C 1 23 24839 1043.16 93 91 23.7
D 8 195 633584 24561.51 93 90 25.8
D 12 233 66901 2590.36 93 90 25.8
D 10 118 30728 1187.88 93 90 25.8

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