ASTROSAT CZTI

Data Quality Report

Orbit 02527

Creation date: 2024-06-27T14:19:02.922430
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/AS1T01_103T01_9000000374_02527cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02527cztM0_level2_quad_clean.evt
Size (bytes)737,628,480122,860,800
Size703.5 MB 117.2 MB
Events in quadrant A4,825,584742,105
Events in quadrant B5,019,050743,038
Events in quadrant C4,989,895741,162
Events in quadrant D6,731,914706,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230211
B0233901
C0231681
D0279531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11393410.359870%
B11393850.746072%
C11393400.351093%
D113935264.616870%

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 11918 11394 0 0 0.00% 0.00%
B 11918 11394 47 47 0.39% 0.41%
C 11918 11394 2 2 0.02% 0.02%
D 11918 11394 435 435 3.65% 3.82%

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 12 194 13870 49.21 1253 1224 257.0
A 0 226 12990 45.78 1253 1224 257.0
A 15 236 5429 16.36 1253 1224 257.0
B 4 48 92438 374.63 1266 1232 243.5
B 14 167 23584 91.81 1266 1232 243.5
B 12 111 19912 76.73 1266 1232 243.5
C 2 53 95136 330.53 1221 1224 284.1
C 8 112 32052 108.5 1221 1224 284.1
C 14 223 29130 98.22 1221 1224 284.1
D 11 130 1599518 5694.3 1181 1150 280.7
D 11 131 516965 1837.63 1181 1150 280.7
D 7 67 53418 186.21 1181 1150 280.7

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
Veto Counter