ASTROSAT CZTI

Data Quality Report

Orbit 08993

Creation date: 2024-06-27T15:39:47.969175
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/AS1A03_025T08_9000001248_08993cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08993cztM0_level2_quad_clean.evt
Size (bytes)192,363,84045,892,800
Size183.5 MB 43.8 MB
Events in quadrant A1,468,459305,715
Events in quadrant B1,253,082311,611
Events in quadrant C1,532,928294,749
Events in quadrant D1,395,166293,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060471
B054531
C063591
D059061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25561094.264476%
B2556953.716745%
C25561947.589984%
D25561074.186228%

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 2851 2557 1 1 0.04% 0.04%
B 2851 2557 0 0 0.00% 0.00%
C 2851 2557 57 57 2.00% 2.23%
D 2851 2557 25 25 0.88% 0.98%

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 8 5 232054 3470.46 318 309 66.8
A 5 16 8305 119.74 318 309 66.8
A 3 1 4053 56.06 318 309 66.8
B 0 219 12744 195.5 317 309 63.6
B 12 111 6775 101.65 317 309 63.6
B 11 111 5494 81.52 317 309 63.6
C 4 254 364829 5125.27 298 299 71.1
C 4 238 2527 31.33 298 299 71.1
C 13 61 2274 27.77 298 299 71.1
D 1 52 120618 1429.75 314 307 84.1
D 7 71 56517 667.99 314 307 84.1
D 2 234 11647 134.76 314 307 84.1

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