ASTROSAT CZTI

Data Quality Report

Orbit 29379

Creation date: 2024-06-27T20:03:25.140236
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/AS1A10_102T11_9000004220_29379cztM0_level2.evt modeM0/AS1A10_102T11_9000004220_29379cztM0_level2_quad_clean.evt
Size (bytes)853,859,520119,957,760
Size814.3 MB 114.4 MB
Events in quadrant A4,222,055771,856
Events in quadrant B4,399,410785,584
Events in quadrant C4,725,355768,763
Events in quadrant D11,904,228681,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187131
B0192071
C0198561
D0416521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8999350.388932%
B8999790.877875%
C89992252.500278%
D9000234226.022222%

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 9804 9000 20 20 0.20% 0.22%
B 9804 9000 6 6 0.06% 0.07%
C 9804 9000 24 24 0.24% 0.27%
D 9805 9001 2079 2079 21.20% 23.10%

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 15 174 118707 551.82 1060 1037 213.2
A 13 254 17712 78.2 1060 1037 213.2
A 3 137 10539 44.56 1060 1037 213.2
B 5 255 131985 653.94 1051 1026 200.3
B 0 229 76165 375.21 1051 1026 200.3
B 0 190 32251 155.92 1051 1026 200.3
C 10 9 360304 1517.35 1014 1018 236.8
C 3 233 210342 884.02 1014 1018 236.8
C 14 238 168097 705.61 1014 1018 236.8
D 12 33 5769305 25609.86 942 915 225.2
D 1 52 1712681 7599.71 942 915 225.2
D 8 195 332721 1473.12 942 915 225.2

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