ASTROSAT CZTI

Data Quality Report

Orbit 20201212_A10_073T05_9000004068_level2

Creation date: 2021-01-06T22:31:42.490823
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_073T05_9000004068cztM0_level2_bc.evt modeM0/AS1A10_073T05_9000004068cztM0_level2_quad_clean.evt
Size (bytes)4,853,954,8801,512,187,200
Size4.5 GB 1.4 GB
Events in quadrant A23,120,6869,967,651
Events in quadrant B30,216,8479,877,205
Events in quadrant C24,611,6449,469,360
Events in quadrant D61,668,8319,051,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02233980
B02518800
C02345880
D03626670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022120
B022100
C022120
D022120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01890
B01890
C01890
D01890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1085449110.839291%
B10853235513.271846%
C10853323902.202095%
D1085251164110.726561%

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 144427 108604 0 0 0.00% 0.00%
B 144427 108592 378 378 0.26% 0.35%
C 144427 108590 19 19 0.01% 0.02%
D 144427 108598 2898 2898 2.01% 2.67%

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 165021 125.51 5920 5842 1268.2
A 15 174 78233 57.08 5920 5842 1268.2
A 6 16 63368 45.36 5920 5842 1268.2
B 10 245 5943978 5412.07 5838 5705 1097.2
B 10 246 775231 701.34 5838 5705 1097.2
B 15 32 591902 534.25 5838 5705 1097.2
C 3 233 2666592 2049.8 5552 5536 1298.2
C 15 208 461760 351.43 5552 5536 1298.2
C 2 16 100022 72.78 5552 5536 1298.2
D 1 52 21612752 17375.77 5475 5317 1243.5
D 8 195 4599825 3694.71 5475 5317 1243.5
D 7 80 4120162 3308.98 5475 5317 1243.5

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