ASTROSAT CZTI

Data Quality Report

Orbit 51780

Creation date: 2025-04-25T03:35:24.648212
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_51780cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51780cztM0_level2_quad_clean.evt
Size (bytes)1,015,007,040144,351,360
Size968.0 MB 137.7 MB
Events in quadrant A6,911,551990,088
Events in quadrant B7,895,8981,053,722
Events in quadrant C6,725,865948,269
Events in quadrant D15,213,338638,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278462
B0308732
C0272282
D0526272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106821841.722524%
B106834504.212300%
C106832382.227839%
D10683356733.389497%

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 12002 10684 122 122 1.02% 1.14%
B 12003 10685 256 256 2.13% 2.40%
C 12003 10685 176 176 1.47% 1.65%
D 12003 10685 3203 3203 26.68% 29.98%

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 14 612648 2180.28 1130 1103 280.5
A 12 3 372746 1324.98 1130 1103 280.5
A 2 143 195274 692.26 1130 1103 280.5
B 4 206 990981 4092.36 1118 1075 241.9
B 10 44 847000 3497.13 1118 1075 241.9
B 4 174 421686 1738.84 1118 1075 241.9
C 15 218 625248 2092.84 1100 1091 298.2
C 3 242 506692 1695.31 1100 1091 298.2
C 9 38 343524 1148.2 1100 1091 298.2
D 11 129 10580684 40493.33 926 892 261.3
D 3 12 558368 2133.7 926 892 261.3
D 8 176 117034 444.52 926 892 261.3

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