ASTROSAT CZTI

Data Quality Report

Orbit 12882

Creation date: 2024-06-27T16:33:31.678761
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/AS1C03_001T01_9000001894_12882cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12882cztM0_level2_quad_clean.evt
Size (bytes)593,308,800117,480,960
Size565.8 MB 112.0 MB
Events in quadrant A3,112,212849,260
Events in quadrant B5,058,760792,353
Events in quadrant C2,777,384826,976
Events in quadrant D6,619,981676,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126102
B0187801
C0120321
D0235861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5904961.626016%
B590477413.109756%
C5904641.084011%
D5904142224.085366%

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 7215 5905 4 4 0.06% 0.07%
B 7215 5905 438 438 6.07% 7.42%
C 7215 5906 0 0 0.00% 0.00%
D 7215 5906 1176 1176 16.30% 19.91%

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 1 162 69344 459.12 747 730 149.4
A 1 178 38481 252.6 747 730 149.4
A 15 174 33376 218.44 747 730 149.4
B 4 239 1162766 9065.2 696 678 128.2
B 0 85 905695 7059.84 696 678 128.2
B 0 219 74234 573.79 696 678 128.2
C 13 61 5130 27.34 712 713 161.5
C 3 202 1720 6.23 712 713 161.5
C 3 203 1581 5.37 712 713 161.5
D 1 52 4070825 27323.66 627 608 149.0
D 4 95 89879 599.28 627 608 149.0
D 8 195 46200 306.06 627 608 149.0

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