ASTROSAT CZTI

Data Quality Report

Orbit 56129

Creation date: 2026-02-11T22:44:13.382517
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_083T03_9000006548_56129cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56129cztM0_level2_quad_clean.evt
Size (bytes)718,197,12085,633,920
Size684.9 MB 81.7 MB
Events in quadrant A7,415,231478,804
Events in quadrant B4,251,646668,329
Events in quadrant C10,339,792426,273
Events in quadrant D4,078,533569,473

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264121
B0170541
C0351621
D0167305

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6450177427.503876%
B64504096.341085%
C6451238436.955511%
D64501842.852713%

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 7570 6450 1581 1581 20.89% 24.51%
B 7570 6450 185 185 2.44% 2.87%
C 7571 6451 2011 2011 26.56% 31.17%
D 7570 6450 148 148 1.96% 2.29%

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 12 115 2693949 17742.14 613 598 151.8
A 15 32 953681 6278.33 613 598 151.8
A 0 8 780617 5138.29 613 598 151.8
B 5 185 993386 6832.61 688 667 145.3
B 10 247 165045 1131.37 688 667 145.3
B 4 171 89565 611.86 688 667 145.3
C 9 38 4809950 30511.52 573 567 157.6
C 15 147 1795120 11384.94 573 567 157.6
C 15 148 1174636 7448.49 573 567 157.6
D 2 120 377034 1963.83 679 647 191.7
D 14 52 242590 1262.36 679 647 191.7
D 2 249 232027 1207.24 679 647 191.7

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