ASTROSAT CZTI

Data Quality Report

Orbit 53780

Creation date: 2025-09-06T20:12:15.631043
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/AS1A14_022T04_9000006506_53780cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53780cztM0_level2_quad_clean.evt
Size (bytes)1,049,014,08079,295,040
Size1000.4 MB 75.6 MB
Events in quadrant A17,691,89628,060
Events in quadrant B4,457,061742,034
Events in quadrant C8,821,341543,132
Events in quadrant D7,286,691570,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05774785
B01833211
C03140333
D02682219

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7418716896.629819%
B74251001.346801%
C7422158521.355430%
D742285411.506333%

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 7429 7429 6337 6337 85.30% 85.30%
B 7430 7428 64 64 0.86% 0.86%
C 7430 7427 1277 1277 17.19% 17.19%
D 7430 7428 896 896 12.06% 12.06%

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 3 63 16636685 341298.3 190 186 48.7
A 3 78 207370 4250.39 190 186 48.7
A 0 8 24835 505.68 190 186 48.7
B 7 0 661271 3937.78 777 750 167.7
B 4 171 191194 1135.36 777 750 167.7
B 5 185 154552 916.91 777 750 167.7
C 15 158 2780660 14266.86 703 696 194.9
C 15 224 2391989 12272.19 703 696 194.9
C 15 147 207925 1063.51 703 696 194.9
D 1 241 3582854 16934.23 736 700 211.5
D 2 249 119792 562.99 736 700 211.5
D 3 12 116067 545.38 736 700 211.5

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