ASTROSAT CZTI

Data Quality Report

Orbit 18919

Creation date: 2024-06-27T17:56:33.280672
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/AS1A05_163T01_9000002820_18919cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18919cztM0_level2_quad_clean.evt
Size (bytes)663,151,68078,618,240
Size632.4 MB 75.0 MB
Events in quadrant A9,028,525378,523
Events in quadrant B4,030,661551,163
Events in quadrant C3,097,887529,042
Events in quadrant D3,527,802509,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307911
B0156381
C0124941
D0141351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5885287848.903993%
B58852744.655905%
C5886941.597010%
D58861672.837241%

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 7165 5886 1841 1841 25.69% 31.28%
B 7165 5886 111 111 1.55% 1.89%
C 7166 5887 1 1 0.01% 0.02%
D 7166 5887 100 100 1.40% 1.70%

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 14 235 6877198 61386.39 558 548 112.0
A 13 254 5875 47.55 558 548 112.0
A 0 226 4952 39.31 558 548 112.0
B 3 112 925472 6351.12 755 739 145.6
B 10 247 34813 234.02 755 739 145.6
B 7 220 32560 218.55 755 739 145.6
C 3 233 117048 688.56 730 735 168.9
C 14 238 115654 680.31 730 735 168.9
C 6 96 18630 105.94 730 735 168.9
D 12 218 503691 2811.36 742 722 178.9
D 9 1 111005 616.43 742 722 178.9
D 2 234 29784 162.44 742 722 178.9

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