ASTROSAT CZTI

Data Quality Report

Orbit 25383

Creation date: 2024-06-27T19:17:03.493734
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/AS1A09_057T04_9000003712_25383cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25383cztM0_level2_quad_clean.evt
Size (bytes)589,224,960100,546,560
Size561.9 MB 95.9 MB
Events in quadrant A3,481,468655,570
Events in quadrant B4,216,297663,577
Events in quadrant C3,698,818635,547
Events in quadrant D5,981,365609,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144130
B0169690
C0152150
D0225050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6892210.304701%
B68921532.219965%
C68921902.756820%
D68924796.950087%

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 7807 6893 0 0 0.00% 0.00%
B 7807 6893 36 36 0.46% 0.52%
C 7807 6893 60 60 0.77% 0.87%
D 7807 6893 416 416 5.33% 6.04%

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 16 197745 1160.75 843 825 169.6
A 15 173 23999 136.6 843 825 169.6
A 13 254 10580 57.5 843 825 169.6
B 3 112 813227 5099.48 836 813 159.3
B 4 80 47446 292.71 836 813 159.3
B 12 111 19894 119.77 836 813 159.3
C 9 54 283605 1456.09 817 822 194.2
C 14 238 129149 660.78 817 822 194.2
C 10 91 77333 393.97 817 822 194.2
D 7 238 1600892 8158.35 810 786 196.1
D 9 35 720499 3669.55 810 786 196.1
D 1 52 226686 1151.78 810 786 196.1

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