ASTROSAT CZTI

Data Quality Report

Orbit 03897

Creation date: 2024-06-27T14:34:58.460736
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/AS1G05_083T02_9000000498_03897cztM0_level2.evt modeM0/AS1G05_083T02_9000000498_03897cztM0_level2_quad_clean.evt
Size (bytes)665,982,72086,040,000
Size635.1 MB 82.1 MB
Events in quadrant A3,479,210541,003
Events in quadrant B3,843,884540,041
Events in quadrant C8,560,827486,418
Events in quadrant D3,774,260513,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157964
B0163393
C0307673
D0169173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75312653.518789%
B75312613.465675%
C7531216328.721285%
D75312413.200106%

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 7640 7530 11 11 0.14% 0.15%
B 7640 7531 8 8 0.10% 0.11%
C 7640 7530 1607 1607 21.03% 21.34%
D 7640 7530 53 53 0.69% 0.70%

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 0 118 93844 538.58 844 824 172.7
A 2 79 39751 225.39 844 824 172.7
A 15 174 24805 138.85 844 824 172.7
B 7 221 244688 1488.34 854 836 163.8
B 15 204 132297 802.37 854 836 163.8
B 4 81 79755 481.68 854 836 163.8
C 2 53 5757095 35216.39 705 706 163.5
C 8 128 13515 78.36 705 706 163.5
C 7 222 11107 63.63 705 706 163.5
D 12 233 331242 1669.09 814 786 198.0
D 1 20 63770 318.12 814 786 198.0
D 13 239 61241 305.35 814 786 198.0

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
Veto Counter