ASTROSAT CZTI

Data Quality Report

Orbit 55433

Creation date: 2025-12-27T10:48:17.921300
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_099T01_9000006536_55433cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55433cztM0_level2_quad_clean.evt
Size (bytes)521,303,04085,530,240
Size497.2 MB 81.6 MB
Events in quadrant A2,981,502582,198
Events in quadrant B3,909,906609,284
Events in quadrant C2,885,260538,113
Events in quadrant D9,011,363403,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136871
B0161501
C0135601
D0312971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545500.763942%
B65463054.659334%
C6546440.672166%
D6545183227.990833%

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 7878 6820 7 7 0.09% 0.10%
B 7879 6821 191 191 2.42% 2.80%
C 7879 6821 2 2 0.03% 0.03%
D 7878 6796 1560 1560 19.80% 22.95%

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 78 129400 743.08 698 680 173.2
A 4 159 38987 221.14 698 680 173.2
A 4 3 32260 182.31 698 680 173.2
B 10 247 600366 4152.82 679 655 144.4
B 5 172 287241 1984.52 679 655 144.4
B 5 185 117811 811.27 679 655 144.4
C 12 252 57971 305.35 686 681 187.6
C 14 254 47700 250.61 686 681 187.6
C 15 147 24808 128.6 686 681 187.6
D 11 129 6146522 35856.31 608 580 171.4
D 8 160 149567 869.21 608 580 171.4
D 8 48 104197 604.52 608 580 171.4

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