ASTROSAT CZTI

Data Quality Report

Orbit 47285

Creation date: 2024-06-27T23:33:44.498172
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_025T01_9000006312_47285cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47285cztM0_level2_quad_clean.evt
Size (bytes)628,341,120103,046,400
Size599.2 MB 98.3 MB
Events in quadrant A8,254,947689,026
Events in quadrant B3,550,274761,841
Events in quadrant C3,091,741724,256
Events in quadrant D7,866,864498,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291562
B0148292
C0136392
D0276904

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639766310.364233%
B63971762.751290%
C6397701.094263%
D6396168926.407129%

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 7567 6398 307 307 4.06% 4.80%
B 7567 6398 58 58 0.77% 0.91%
C 7567 6398 16 16 0.21% 0.25%
D 7566 6396 1440 1440 19.03% 22.51%

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 3799297 24917.56 734 720 152.4
A 9 191 839110 5499.6 734 720 152.4
A 15 235 731649 4794.68 734 720 152.4
B 0 200 253177 1725.8 757 738 146.3
B 5 32 115366 783.66 757 738 146.3
B 5 171 62337 421.12 757 738 146.3
C 14 254 64871 361.78 749 754 177.2
C 12 2 57207 318.54 749 754 177.2
C 0 207 24127 131.88 749 754 177.2
D 6 112 3340599 20169.69 656 636 165.6
D 14 34 1069890 6457.11 656 636 165.6
D 10 181 393155 2370.38 656 636 165.6

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