ASTROSAT CZTI

Data Quality Report

Orbit 52280

Creation date: 2025-07-21T23:55:08.537340
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/AS1C09_011T05_9000006474_52280cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52280cztM0_level2_quad_clean.evt
Size (bytes)728,386,56071,130,240
Size694.6 MB 67.8 MB
Events in quadrant A3,800,838559,157
Events in quadrant B5,397,935600,689
Events in quadrant C12,800,32950,963
Events in quadrant D4,486,607514,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154891
B0202361
C0422121
D0175541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61293986.493718%
B61294827.864252%
C6129566692.445750%
D61292544.144232%

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 7239 6130 278 278 3.84% 4.54%
B 7239 6130 336 336 4.64% 5.48%
C 7238 6128 4200 4200 58.03% 68.54%
D 7239 6130 192 192 2.65% 3.13%

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 6 162 771667 4941.18 625 611 156.0
A 4 249 91424 581.96 625 611 156.0
A 4 3 79144 503.27 625 611 156.0
B 7 0 973348 7411.88 620 601 131.2
B 0 213 384171 2922.63 620 601 131.2
B 4 171 302308 2298.87 620 601 131.2
C 15 158 7000800 102080.13 246 244 68.6
C 15 224 1409539 20549.94 246 244 68.6
C 0 161 1188025 17319.89 246 244 68.6
D 15 93 947592 5486.05 608 582 172.6
D 12 18 197043 1138.1 608 582 172.6
D 9 49 120769 696.25 608 582 172.6

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