ASTROSAT CZTI

Data Quality Report

Orbit 52641

Creation date: 2025-06-23T20:59:58.378221
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_011T06_9000006478_52641cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52641cztM0_level2_quad_clean.evt
Size (bytes)853,848,00079,871,040
Size814.3 MB 76.2 MB
Events in quadrant A3,997,221610,506
Events in quadrant B6,387,421584,662
Events in quadrant C10,670,590406,374
Events in quadrant D10,061,477373,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163162
B0233838
C0361222
D0343442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63482664.190296%
B634793814.778636%
C6347240337.860406%
D6347238437.561052%

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 7488 6349 204 204 2.72% 3.21%
B 7487 6348 656 656 8.76% 10.33%
C 7487 6347 2314 2314 30.91% 36.46%
D 7487 6348 2112 2112 28.21% 33.27%

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 7 206 306391 1870.13 662 646 163.5
A 5 246 303437 1852.06 662 646 163.5
A 5 243 196371 1197.18 662 646 163.5
B 4 158 1745843 13000.18 634 612 134.2
B 10 128 736925 5484.77 634 612 134.2
B 5 185 642671 4782.68 634 612 134.2
C 15 248 7581735 48844.44 564 559 155.2
C 13 3 374799 2411.18 564 559 155.2
C 12 252 157677 1012.29 564 559 155.2
D 8 176 5073498 33260.15 526 502 152.5
D 15 93 956547 6268.13 526 502 152.5
D 9 19 585768 3837.19 526 502 152.5

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