ASTROSAT CZTI

Data Quality Report

Orbit 20210612_A10_071T46_9000004460_level2

Creation date: 2021-06-14T17:29:35.378014
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/AS1A10_071T46_9000004460cztM0_level2_bc.evt modeM0/AS1A10_071T46_9000004460cztM0_level2_quad_clean.evt
Size (bytes)4,864,017,600928,857,600
Size4.5 GB 885.8 MB
Events in quadrant A16,846,6096,018,092
Events in quadrant B82,080,3715,617,117
Events in quadrant C18,880,1815,690,245
Events in quadrant D24,372,5435,622,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600110
B03814540
C01691970
D01800790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015360
B015360
C015360
D015360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7559913861.833358%
B755991752623.182846%
C7559923433.099247%
D7559914301.891559%

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 87019 75594 16 16 0.02% 0.02%
B 87019 75590 1504 1504 1.73% 1.99%
C 87019 75593 72 72 0.08% 0.10%
D 87019 75593 194 194 0.22% 0.26%

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 0 13 647179 717.91 4184 4120 895.7
A 13 254 136884 148.22 4184 4120 895.7
A 0 31 30921 29.92 4184 4120 895.7
B 6 36 45949925 60879.27 3979 3891 754.7
B 6 159 19494315 25825.14 3979 3891 754.7
B 5 172 351269 460.28 3979 3891 754.7
C 2 16 2095138 2272.54 3953 3940 920.2
C 0 10 803545 868.94 3953 3940 920.2
C 3 233 499394 538.42 3953 3940 920.2
D 8 195 6238881 6776.49 4015 3901 920.1
D 1 52 752063 813.14 4015 3901 920.1
D 2 250 700611 757.22 4015 3901 920.1

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