ASTROSAT CZTI

Data Quality Report

Orbit 20220609_A11_080T02_9000005176_level2

Creation date: 2022-06-13T15:08:08.171709
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_080T02_9000005176cztM0_level2_bc.evt modeM0/AS1A11_080T02_9000005176cztM0_level2_quad_clean.evt
Size (bytes)9,023,492,1601,598,906,880
Size8.4 GB 1.5 GB
Events in quadrant A36,361,39910,453,025
Events in quadrant B50,313,98210,288,223
Events in quadrant C64,926,5709,638,015
Events in quadrant D112,486,5888,751,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02975700
B03662480
C04049590
D05588230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027720
B027720
C027720
D027720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1355034640.342428%
B13550370575.208003%
C1355031449810.699394%
D1355032664219.661557%

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 187973 135534 45 45 0.02% 0.03%
B 187973 135503 542 542 0.29% 0.40%
C 187973 135477 4119 4119 2.19% 3.04%
D 187973 135472 14436 14436 7.68% 10.66%

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 15 223 4198689 2758.88 6858 6742 1519.4
A 10 83 3622151 2379.43 6858 6742 1519.4
A 9 143 715277 466.31 6858 6742 1519.4
B 5 172 8984923 6693.84 6803 6659 1341.3
B 5 236 6939078 5168.54 6803 6659 1341.3
B 0 213 2750342 2045.58 6803 6659 1341.3
C 4 254 26698414 18095.8 6405 6355 1475.0
C 15 214 5152912 3489.09 6405 6355 1475.0
C 0 10 4339806 2937.85 6405 6355 1475.0
D 12 227 46961333 30353.54 6219 6000 1546.9
D 12 235 18781714 12137.27 6219 6000 1546.9
D 12 6 10408743 6724.69 6219 6000 1546.9

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