ASTROSAT CZTI

Data Quality Report

Orbit 57985

Creation date: 2026-06-16T20:15:23.781722
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_031T01_9000006584_57985cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57985cztM0_level2_quad_clean.evt
Size (bytes)508,320,00099,063,360
Size484.8 MB 94.5 MB
Events in quadrant A3,346,436666,297
Events in quadrant B6,410,485648,825
Events in quadrant C5,052,493601,336
Events in quadrant D3,470,094601,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149052
B0236582
C0197062
D0148133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69071742.519183%
B690793613.551470%
C69075558.035326%
D69061031.491457%

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 7816 6906 34 34 0.44% 0.49%
B 7816 6906 666 666 8.52% 9.64%
C 7816 6906 472 472 6.04% 6.83%
D 7815 6905 28 28 0.36% 0.41%

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 10 251 225733 1175.86 779 757 191.3
A 12 3 33951 173.49 779 757 191.3
A 3 14 22923 115.85 779 757 191.3
B 10 128 2824913 18020.88 728 703 156.7
B 5 185 322975 2056.37 728 703 156.7
B 4 201 96027 608.25 728 703 156.7
C 15 224 1940600 9627.17 733 729 201.5
C 6 223 176776 873.68 733 729 201.5
C 2 0 40010 194.94 733 729 201.5
D 12 110 142856 667.21 757 722 213.0
D 8 240 105626 492.44 757 722 213.0
D 2 31 79487 369.74 757 722 213.0

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