ASTROSAT CZTI

Data Quality Report

Orbit 10676

Creation date: 2024-06-27T16:02:20.411437
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/AS1A03_097T01_9000001540_10676cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10676cztM0_level2_quad_clean.evt
Size (bytes)1,002,928,32076,726,080
Size956.5 MB 73.2 MB
Events in quadrant A17,681,624215,448
Events in quadrant B5,081,563543,608
Events in quadrant C3,271,920552,889
Events in quadrant D3,868,486523,528

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05695012
B0196756
C0145432
D0157104

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6972606186.933448%
B69724576.554791%
C6973771.104259%
D69721021.462995%

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 7818 6972 5974 5974 76.41% 85.69%
B 7818 6973 271 271 3.47% 3.89%
C 7818 6973 11 11 0.14% 0.16%
D 7818 6973 45 45 0.58% 0.65%

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 15 239 16470810 262653.75 304 298 62.7
A 1 162 13806 215.41 304 298 62.7
A 13 251 7318 111.95 304 298 62.7
B 4 239 1360801 8636.59 815 792 157.5
B 4 81 295832 1873.62 815 792 157.5
B 0 214 89162 561.18 815 792 157.5
C 4 254 108727 580.87 800 805 185.8
C 1 3 22879 118.81 800 805 185.8
C 14 234 10482 52.08 800 805 185.8
D 8 195 280777 1458.94 796 773 191.9
D 1 52 143580 744.09 796 773 191.9
D 12 233 121394 628.49 796 773 191.9

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