ASTROSAT CZTI

Data Quality Report

Orbit 28173

Creation date: 2024-06-27T19:48:50.831500
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_073T05_9000004068_28173cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28173cztM0_level2_quad_clean.evt
Size (bytes)647,902,08086,137,920
Size617.9 MB 82.1 MB
Events in quadrant A3,688,744541,962
Events in quadrant B4,917,034531,149
Events in quadrant C3,793,323511,236
Events in quadrant D6,705,418492,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158620
B0195240
C0160370
D0251360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76321331.742662%
B76334225.528626%
C76332072.711909%
D763377710.179484%

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 7852 7632 0 0 0.00% 0.00%
B 7853 7633 187 187 2.38% 2.45%
C 7853 7633 18 18 0.23% 0.24%
D 7853 7634 555 555 7.07% 7.27%

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 6 16 60424 317.93 935 915 187.2
A 12 16 14203 70.99 935 915 187.2
A 13 254 12621 62.54 935 915 187.2
B 10 245 1103948 6367.2 904 880 173.2
B 10 246 164023 941.7 904 880 173.2
B 0 230 29006 162.35 904 880 173.2
C 3 233 154462 751.59 878 882 204.3
C 14 238 140801 684.73 878 882 204.3
C 15 208 68611 331.45 878 882 204.3
D 1 52 1826999 8809.48 871 846 207.3
D 8 195 651448 3138.55 871 846 207.3
D 13 104 413284 1989.63 871 846 207.3

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