ASTROSAT CZTI

Data Quality Report

Orbit 36379

Creation date: 2022-06-21T02:53:10.481299
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_097T24_9000005196_36379cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36379cztM0_level2_quad_clean.evt
Size (bytes)446,276,16088,375,680
Size425.6 MB 84.3 MB
Events in quadrant A2,944,022596,813
Events in quadrant B3,361,611592,856
Events in quadrant C2,958,273585,785
Events in quadrant D3,906,609544,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119753
B0132712
C0117882
D0150692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50841322.596381%
B50843316.510622%
C50841011.986625%
D50843216.313926%

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 9271 5086 94 94 1.01% 1.85%
B 9271 5086 274 274 2.96% 5.39%
C 9271 5086 78 78 0.84% 1.53%
D 9271 5086 301 301 3.25% 5.92%

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 15 223 409834 3387.67 601 592 120.8
A 10 83 176087 1452.73 601 592 120.8
A 9 143 20794 167.23 601 592 120.8
B 5 172 822510 7274.91 586 571 113.0
B 5 255 170036 1499.92 586 571 113.0
B 4 171 16589 141.77 586 571 113.0
C 0 10 263640 1921.93 589 593 136.9
C 15 214 216821 1579.85 589 593 136.9
C 4 254 167157 1216.99 589 593 136.9
D 12 6 717086 5087.82 578 566 140.8
D 13 249 247662 1754.56 578 566 140.8
D 12 16 182351 1290.81 578 566 140.8

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