ASTROSAT CZTI

Data Quality Report

Orbit 51832

Creation date: 2025-04-28T15:06:37.797113
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/AS1A13_090T01_9000006464_51832cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51832cztM0_level2_quad_clean.evt
Size (bytes)406,278,72048,142,080
Size387.5 MB 45.9 MB
Events in quadrant A2,340,084342,315
Events in quadrant B2,763,053362,023
Events in quadrant C2,412,454332,860
Events in quadrant D7,229,042153,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094730
B0108410
C099170
D0240680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3779481.270177%
B37792015.318867%
C37791263.334215%
D3779213656.522890%

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 3779 3779 36 36 0.95% 0.95%
B 3779 3779 137 137 3.63% 3.63%
C 3779 3779 115 115 3.04% 3.04%
D 3779 3779 1895 1895 50.15% 50.15%

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 3 267695 2788.33 388 378 95.9
A 15 174 140276 1459.25 388 378 95.9
A 3 14 99614 1035.11 388 378 95.9
B 4 206 519774 6408.29 378 366 81.1
B 10 128 200149 2464.86 378 366 81.1
B 5 32 113807 1399.6 378 366 81.1
C 12 254 587722 5654.32 377 374 103.9
C 0 192 98613 945.73 377 374 103.9
C 0 176 65683 628.72 377 374 103.9
D 11 129 5533393 70986.51 277 266 77.9
D 8 176 297181 3809.23 277 266 77.9
D 11 176 86305 1103.83 277 266 77.9

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