ASTROSAT CZTI

Data Quality Report

Orbit 20201203_A10_045T02_9000004048_level2

Creation date: 2025-12-18T12:03:02.193116
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/AS1A10_045T02_9000004048cztM0_level2.fits modeM0/AS1A10_045T02_9000004048cztM0_level2_quad_clean.evt
Size (bytes)197,231,040145,725,120
Size188.1 MB 139.0 MB
Events in quadrant A1,272,606852,312
Events in quadrant B1,218,262840,204
Events in quadrant C1,201,628775,589
Events in quadrant D1,046,654709,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390410
B0394530
C0405980
D0600220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179123341.864672%
B179124192.339214%
C179124902.735596%
D179129665.393033%

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 21216 17908 0 0 0.00% 0.00%
B 21216 17906 0 0 0.00% 0.00%
C 21216 17907 0 0 0.00% 0.00%
D 21216 17900 0 0 0.00% 0.00%

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 0 29 1066 9.3 331 314 80.9
A 7 110 1032 8.88 331 314 80.9
A 9 19 968 8.09 331 314 80.9
B 2 9 929 9.46 322 310 65.4
B 2 8 783 7.23 322 310 65.4
B 5 255 782 7.21 322 310 65.4
C 1 81 878 7.1 317 301 81.2
C 1 80 861 6.89 317 301 81.2
C 12 241 845 6.7 317 301 81.2
D 6 67 796 6.5 298 273 80.4
D 7 3 778 6.28 298 273 80.4
D 4 246 770 6.18 298 273 80.4

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