ASTROSAT CZTI

Data Quality Report

Orbit 20180616_A04_011T07_9000002172_level2

Creation date: 2018-06-18T11:13:10.026112
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A04_011T07_9000002172cztM0_level2_bc.evt modeM0/AS1A04_011T07_9000002172cztM0_level2_quad_clean.evt
Size (bytes)1,871,867,520712,857,600
Size1.7 GB 679.8 MB
Events in quadrant A12,413,3274,662,138
Events in quadrant B11,828,1544,582,766
Events in quadrant C16,157,2844,493,669
Events in quadrant D12,927,5184,467,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010080
B010080
C010080
D010080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01088300
B01086880
C01251120
D01105460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493526061.227914%
B493528781.779057%
C493526131.242098%
D493527861.592641%

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 59089 49347 1 1 0.00% 0.00%
B 59089 49345 34 34 0.06% 0.07%
C 59089 49346 9 9 0.02% 0.02%
D 59089 49347 91 91 0.15% 0.18%

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 15 1107635 1867.11 2740 2686 591.8
A 12 189 427691 718.16 2740 2686 591.8
A 3 1 168255 279.77 2740 2686 591.8
B 10 16 687176 1347.35 2696 2629 508.1
B 0 229 214385 416.78 2696 2629 508.1
B 0 205 136430 263.35 2696 2629 508.1
C 3 233 5595081 9816.25 2611 2578 569.7
C 0 207 274481 477.26 2611 2578 569.7
C 3 234 38513 63.07 2611 2578 569.7
D 12 110 1524865 2305.95 2660 2591 660.2
D 9 1 239658 359.11 2660 2591 660.2
D 2 234 230656 345.47 2660 2591 660.2

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