ASTROSAT CZTI

Data Quality Report

Orbit 33957

Creation date: 2024-06-27T20:54:50.687278
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/AS1A11_058T01_9000004854_33957cztM0_level2.evt modeM0/AS1A11_058T01_9000004854_33957cztM0_level2_quad_clean.evt
Size (bytes)83,594,88020,568,960
Size79.7 MB 19.6 MB
Events in quadrant A474,521144,632
Events in quadrant B701,821141,056
Events in quadrant C587,670137,482
Events in quadrant D704,466130,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018762
B026181
C022301
D027111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88420.226244%
B884738.257919%
C884313.506787%
D884465.203620%

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 884 884 1 1 0.11% 0.11%
B 884 884 52 52 5.88% 5.88%
C 884 884 29 29 3.28% 3.28%
D 884 884 28 28 3.17% 3.17%

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 83 6520 253.8 119 117 25.2
A 15 169 3313 126.68 119 117 25.2
A 13 6 2292 86.21 119 117 25.2
B 5 172 248732 10702.77 114 111 23.2
B 0 199 4117 172.45 114 111 23.2
B 3 112 2521 103.75 114 111 23.2
C 0 10 109184 4109.87 109 109 26.5
C 15 214 42053 1580.42 109 109 26.5
C 3 233 9020 335.76 109 109 26.5
D 8 195 123685 4444.81 108 105 27.8
D 13 249 110146 3957.85 108 105 27.8
D 7 238 52064 1868.81 108 105 27.8

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