ASTROSAT CZTI

Data Quality Report

Orbit 36081

Creation date: 2022-08-10T06:39:44.744296
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/AS1T04_069T01_9000005158_36081cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36081cztM0_level2_quad_clean.evt
Size (bytes)1,196,464,320190,912,320
Size1.1 GB 182.1 MB
Events in quadrant A7,252,9061,236,329
Events in quadrant B8,730,5021,213,479
Events in quadrant C8,465,3381,188,021
Events in quadrant D10,744,8731,080,134

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 19676 15412 1 1 0.01% 0.01%
B 19676 15412 259 259 1.32% 1.68%
C 19676 15412 157 157 0.80% 1.02%
D 19676 15412 895 895 4.55% 5.81%

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 409174 1143.6 1757 1723 356.3
A 13 6 35079 93.62 1757 1723 356.3
A 13 254 19273 49.26 1757 1723 356.3
B 5 172 1160744 3479.46 1727 1684 333.1
B 4 232 179197 532.89 1727 1684 333.1
B 0 190 158271 470.07 1727 1684 333.1
C 15 208 871271 2226.69 1679 1688 390.5
C 15 214 632018 1614.05 1679 1688 390.5
C 0 10 343086 874.2 1679 1688 390.5
D 1 52 2270886 5731.72 1621 1574 395.9
D 12 6 634390 1598.34 1621 1574 395.9
D 12 233 316944 796.55 1621 1574 395.9

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