ASTROSAT CZTI

Data Quality Report

Orbit 37740

Creation date: 2024-06-27T21:43:49.794123
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/AS1A11_106T02_9000005344_37740cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37740cztM0_level2_quad_clean.evt
Size (bytes)456,958,08060,071,040
Size435.8 MB 57.3 MB
Events in quadrant A4,460,559362,647
Events in quadrant B2,699,640367,069
Events in quadrant C2,891,776376,026
Events in quadrant D3,443,232358,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164583
B0112452
C0115332
D0136032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506162412.329579%
B5061511.007706%
C50611583.121913%
D50611793.536850%

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 7093 5061 606 606 8.54% 11.97%
B 7093 5062 34 34 0.48% 0.67%
C 7092 5060 143 143 2.02% 2.83%
D 7093 5061 157 157 2.21% 3.10%

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 15 222 1941342 17095.08 561 551 113.5
A 10 83 318430 2799.98 561 551 113.5
A 12 189 13340 112.65 561 551 113.5
B 5 255 181518 1644.25 584 571 110.0
B 0 229 48373 434.37 584 571 110.0
B 5 172 43305 388.32 584 571 110.0
C 0 10 361375 2724.81 572 576 132.4
C 15 214 214039 1612.1 572 576 132.4
C 1 23 25190 185.89 572 576 132.4
D 2 249 725113 5223.2 573 558 138.7
D 2 153 219361 1577.32 573 558 138.7
D 13 249 80780 578.31 573 558 138.7

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