ASTROSAT CZTI

Data Quality Report

Orbit 44620

Creation date: 2024-06-27T23:04:35.429159
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/AS1A13_009T03_9000006006_44620cztM0_level2.fits modeM0/AS1A13_009T03_9000006006_44620cztM0_level2_quad_clean.evt
Size (bytes)458,311,680115,217,280
Size437.1 MB 109.9 MB
Events in quadrant A5,219,430774,757
Events in quadrant B3,440,476808,870
Events in quadrant C3,388,837762,510
Events in quadrant D4,404,297683,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209332
B0143962
C0144592
D0176124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65931832.775671%
B65931442.184135%
C65931141.729107%
D65913204.855105%

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 7793 6594 14 14 0.18% 0.21%
B 7793 6594 21 21 0.27% 0.32%
C 7793 6594 29 29 0.37% 0.44%
D 7792 6593 247 247 3.17% 3.75%

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 1979009 12113.9 791 774 163.3
A 15 223 128425 781.68 791 774 163.3
A 13 248 42015 252.54 791 774 163.3
B 0 186 115019 731.16 798 772 156.3
B 0 190 85205 540.36 798 772 156.3
B 5 172 79705 505.16 798 772 156.3
C 12 2 158329 859.77 779 787 183.2
C 3 233 112841 611.52 779 787 183.2
C 9 54 40151 214.83 779 787 183.2
D 13 153 503067 2596.82 764 741 193.4
D 13 249 389411 2009.27 764 741 193.4
D 1 52 365840 1887.42 764 741 193.4

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