ASTROSAT CZTI

Data Quality Report

Orbit 29358

Creation date: 2024-06-27T20:03:11.212272
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/AS1T03_279T01_9000004218_29358cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29358cztM0_level2_quad_clean.evt
Size (bytes)782,259,84087,998,400
Size746.0 MB 83.9 MB
Events in quadrant A5,429,476541,850
Events in quadrant B3,976,129574,202
Events in quadrant C5,100,925546,664
Events in quadrant D8,695,659497,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205392
B0161732
C0199512
D0308702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A723781211.220119%
B72372653.661738%
C72373544.891530%
D7237174024.043112%

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 7912 7238 487 487 6.16% 6.73%
B 7912 7238 17 17 0.21% 0.23%
C 7912 7238 56 56 0.71% 0.77%
D 7911 7236 1312 1312 16.58% 18.13%

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 1 113 1896498 10453.58 903 885 181.3
A 0 13 43485 234.92 903 885 181.3
A 13 254 13753 70.96 903 885 181.3
B 10 245 147863 843.52 919 896 174.2
B 15 33 58597 331.18 919 896 174.2
B 0 229 49431 278.57 919 896 174.2
C 3 233 1469652 7006.83 888 895 209.6
C 14 238 141904 672.7 888 895 209.6
C 2 114 17731 80.32 888 895 209.6
D 1 52 2647272 13776.34 812 792 192.1
D 7 80 1179276 6134.64 812 792 192.1
D 12 233 697679 3627.67 812 792 192.1

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