ASTROSAT CZTI

Data Quality Report

Orbit 37428

Creation date: 2024-06-27T21:39:51.915799
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/AS1A09_002T01_9000005322_37428cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37428cztM0_level2_quad_clean.evt
Size (bytes)439,208,64082,558,080
Size418.9 MB 78.7 MB
Events in quadrant A2,996,770528,459
Events in quadrant B3,468,716523,486
Events in quadrant C2,967,792534,171
Events in quadrant D3,477,602511,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125593
B0141662
C0124832
D0143652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5747300.522011%
B57472233.880285%
C5747500.870019%
D57471001.740038%

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 7270 5748 15 15 0.21% 0.26%
B 7270 5748 162 162 2.23% 2.82%
C 7270 5748 50 50 0.69% 0.87%
D 7270 5748 87 87 1.20% 1.51%

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 10 83 312722 2392.14 636 624 130.5
A 9 143 110581 842.79 636 624 130.5
A 15 222 27019 202.31 636 624 130.5
B 5 172 354711 2963.63 622 606 119.5
B 0 189 306496 2560.1 622 606 119.5
B 4 171 209748 1750.39 622 606 119.5
C 15 214 241577 1682.67 615 619 143.2
C 0 10 153962 1070.83 615 619 143.2
C 14 254 145031 1008.47 615 619 143.2
D 2 153 270660 1779.72 615 598 151.7
D 12 235 169683 1114.28 615 598 151.7
D 10 253 165792 1088.64 615 598 151.7

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