ASTROSAT CZTI

Data Quality Report

Orbit 20220607_A11_097T17_9000005170_level2

Creation date: 2022-06-11T14:07:56.331290
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_097T17_9000005170cztM0_level2_bc.evt modeM0/AS1A11_097T17_9000005170cztM0_level2_quad_clean.evt
Size (bytes)2,984,981,760738,619,200
Size2.8 GB 704.4 MB
Events in quadrant A13,430,4244,787,768
Events in quadrant B14,636,1654,848,541
Events in quadrant C31,102,3434,439,639
Events in quadrant D27,359,7324,388,733

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011680
B011680
C011680
D011680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190640
B01260430
C01883850
D01701570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569031310.230216%
B569037071.242465%
C56903765513.452718%
D5690342707.503998%

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 79070 56916 10 10 0.01% 0.02%
B 79070 56903 88 88 0.11% 0.15%
C 79070 56883 1999 1999 2.53% 3.51%
D 79070 56900 1508 1508 1.91% 2.65%

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 10 83 1402556 2203.87 2867 2822 635.1
A 15 223 418329 654.21 2867 2822 635.1
A 8 144 200660 311.49 2867 2822 635.1
B 5 172 1931461 3352.03 2902 2834 575.4
B 4 171 610277 1055.76 2902 2834 575.4
B 5 236 266293 457.9 2902 2834 575.4
C 4 254 14823281 24367.76 2652 2633 608.2
C 15 214 2245802 3688.17 2652 2633 608.2
C 15 208 2029370 3332.31 2652 2633 608.2
D 12 227 6249312 9516.87 2773 2691 656.4
D 12 6 2906412 4423.88 2773 2691 656.4
D 2 250 2142016 3259.31 2773 2691 656.4

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