ASTROSAT CZTI

Data Quality Report

Orbit 38250

Creation date: 2024-06-27T21:50:18.993762
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/AS1A07_145T01_9000005370_38250cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38250cztM0_level2_quad_clean.evt
Size (bytes)520,364,16094,800,960
Size496.3 MB 90.4 MB
Events in quadrant A3,739,742665,595
Events in quadrant B2,943,092680,933
Events in quadrant C3,068,060651,585
Events in quadrant D9,049,222455,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148853
B0127382
C0127932
D0311382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5952550.924059%
B5952480.806452%
C5952440.739247%
D5952172829.032258%

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 7236 5953 57 57 0.79% 0.96%
B 7236 5953 14 14 0.19% 0.24%
C 7236 5953 27 27 0.37% 0.45%
D 7236 5953 1831 1831 25.30% 30.76%

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 12 16 551008 4084.2 663 649 134.8
A 10 83 398857 2955.09 663 649 134.8
A 12 189 99988 737.19 663 649 134.8
B 5 172 252663 1970.24 659 642 127.9
B 5 184 41521 319.58 659 642 127.9
B 0 230 21571 163.62 659 642 127.9
C 15 214 250245 1639.61 645 650 152.2
C 14 254 174603 1142.71 645 650 152.2
C 9 236 80571 525.01 645 650 152.2
D 12 235 3312957 22702.84 595 578 145.9
D 10 203 2915026 19975.45 595 578 145.9
D 2 250 199663 1364.52 595 578 145.9

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