ASTROSAT CZTI

Data Quality Report

Orbit 57106

Creation date: 2026-04-18T14:09:16.543844
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_083T10_9000006566_57106cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57106cztM0_level2_quad_clean.evt
Size (bytes)504,149,760108,861,120
Size480.8 MB 103.8 MB
Events in quadrant A3,872,379706,668
Events in quadrant B5,085,113721,406
Events in quadrant C3,827,437699,144
Events in quadrant D5,282,045636,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170352
B0205262
C0168042
D0207732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76503524.601307%
B765177110.077114%
C76511972.574827%
D76514085.332636%

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 7770 7652 112 112 1.44% 1.46%
B 7771 7652 352 352 4.53% 4.60%
C 7771 7653 26 26 0.33% 0.34%
D 7771 7653 192 192 2.47% 2.51%

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 8 9 261295 1246.71 849 825 208.9
A 10 251 88992 422.0 849 825 208.9
A 3 14 64791 306.16 849 825 208.9
B 10 16 1310650 7716.89 796 767 169.7
B 4 171 253160 1486.92 796 767 169.7
B 8 128 136641 800.47 796 767 169.7
C 12 252 130860 572.32 836 826 227.2
C 14 254 104996 458.49 836 826 227.2
C 6 223 76380 332.54 836 826 227.2
D 15 142 746296 3241.11 822 784 230.0
D 12 33 567711 2464.72 822 784 230.0
D 2 249 204738 886.69 822 784 230.0

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