ASTROSAT CZTI

Data Quality Report

Orbit 20210211_A10_094T22_9000004168_level2

Creation date: 2021-02-13T08:15:39.364993
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_094T22_9000004168cztM0_level2_bc.evt modeM0/AS1A10_094T22_9000004168cztM0_level2_quad_clean.evt
Size (bytes)94,417,92038,643,840
Size90.0 MB 36.9 MB
Events in quadrant A480,578265,255
Events in quadrant B495,361269,296
Events in quadrant C452,117252,036
Events in quadrant D1,287,504238,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045430
B045540
C044660
D074470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1999522.601301%
B1999552.751376%
C1999643.201601%
D199921010.505253%

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 3058 1997 0 0 0.00% 0.00%
B 3058 1997 0 0 0.00% 0.00%
C 3058 1997 0 0 0.00% 0.00%
D 3058 1997 14 14 0.46% 0.70%

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 13 254 3627 124.15 123 121 28.2
A 6 16 2306 77.38 123 121 28.2
A 13 6 2214 74.12 123 121 28.2
B 10 246 8412 322.85 124 120 25.7
B 3 209 5794 220.92 124 120 25.7
B 5 255 2065 75.73 124 120 25.7
C 2 114 4114 137.09 115 114 29.2
C 0 207 1037 31.63 115 114 29.2
C 3 233 827 24.44 115 114 29.2
D 1 52 422159 15205.63 115 110 27.8
D 8 195 236570 8519.21 115 110 27.8
D 12 233 165874 5972.16 115 110 27.8

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