ASTROSAT CZTI

Data Quality Report

Orbit 20201209_A10_090T14_9000004064_level2

Creation date: 2021-01-07T00:14:33.977775
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/AS1A10_090T14_9000004064cztM0_level2_bc.evt modeM0/AS1A10_090T14_9000004064cztM0_level2_quad_clean.evt
Size (bytes)2,071,733,760654,825,600
Size1.9 GB 624.5 MB
Events in quadrant A10,625,7524,331,052
Events in quadrant B11,848,4284,360,319
Events in quadrant C10,168,9744,122,672
Events in quadrant D26,893,5123,790,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09560
B09560
C09560
D09560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0988470
B01035150
C0992300
D01635870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A470584761.011518%
B470586951.476901%
C470586401.360024%
D47058575112.221089%

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 57003 47055 52 52 0.09% 0.11%
B 57003 47056 35 35 0.06% 0.07%
C 57003 47057 6 6 0.01% 0.01%
D 57003 47055 915 915 1.61% 1.94%

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 15 174 251348 433.49 2679 2639 573.7
A 13 254 69575 116.67 2679 2639 573.7
A 0 13 18465 27.58 2679 2639 573.7
B 10 245 698446 1393.81 2685 2635 499.2
B 10 246 300037 595.74 2685 2635 499.2
B 15 32 276171 547.93 2685 2635 499.2
C 3 233 284361 475.64 2535 2533 592.5
C 2 16 83682 136.95 2535 2533 592.5
C 15 208 48963 78.36 2535 2533 592.5
D 1 52 7464399 13408.42 2449 2380 556.5
D 12 2 3091233 5550.33 2449 2380 556.5
D 13 168 1470864 2638.7 2449 2380 556.5

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