ASTROSAT CZTI

Data Quality Report

Orbit 35752

Creation date: 2022-05-13T11:44:18.122586
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/AS1A09_143T10_9000005130_35752cztM0_level2.evt modeM0/AS1A09_143T10_9000005130_35752cztM0_level2_quad_clean.evt
Size (bytes)439,188,48090,774,720
Size418.8 MB 86.6 MB
Events in quadrant A2,691,998618,079
Events in quadrant B3,097,337611,593
Events in quadrant C2,933,697592,383
Events in quadrant D4,217,419555,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112822
B0125521
C0118431
D0161691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530860.113037%
B53081152.166541%
C5308771.450641%
D53083616.801055%

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 7192 5309 0 0 0.00% 0.00%
B 7192 5309 92 92 1.28% 1.73%
C 7192 5309 63 63 0.88% 1.19%
D 7192 5309 369 369 5.13% 6.95%

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 137547 1037.64 652 640 131.9
A 13 6 12894 92.88 652 640 131.9
A 8 192 10297 73.19 652 640 131.9
B 5 172 277690 2294.04 633 615 120.8
B 0 190 101232 833.06 633 615 120.8
B 5 255 98066 806.85 633 615 120.8
C 15 214 223282 1550.37 621 626 143.6
C 0 10 182936 1269.44 621 626 143.6
C 15 208 98584 682.09 621 626 143.6
D 14 52 1264219 8267.03 621 604 152.8
D 13 249 121200 788.98 621 604 152.8
D 14 226 100574 654.04 621 604 152.8

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