ASTROSAT CZTI

Data Quality Report

Orbit 09185

Creation date: 2024-06-27T15:42:26.082947
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/AS1C02_041T02_9000001282_09185cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09185cztM0_level2_quad_clean.evt
Size (bytes)482,961,60086,590,080
Size460.6 MB 82.6 MB
Events in quadrant A4,468,189547,439
Events in quadrant B3,281,845551,944
Events in quadrant C2,962,149535,080
Events in quadrant D3,462,616523,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179252
B0140341
C0135421
D0149411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6659600.901036%
B6659260.390449%
C6659180.270311%
D66591041.561796%

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 7519 6660 18 18 0.24% 0.27%
B 7519 6660 4 4 0.05% 0.06%
C 7519 6660 10 10 0.13% 0.15%
D 7519 6660 79 79 1.05% 1.19%

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 8 5 991072 6181.01 783 765 160.2
A 1 162 161542 1003.49 783 765 160.2
A 15 223 113069 700.94 783 765 160.2
B 8 234 105330 689.66 787 767 151.6
B 0 230 43704 283.2 787 767 151.6
B 0 214 28243 181.22 787 767 151.6
C 14 234 31125 172.89 750 753 175.7
C 13 61 5948 29.57 750 753 175.7
C 8 222 4299 20.19 750 753 175.7
D 9 64 298479 1606.24 754 731 185.4
D 1 52 87139 466.14 754 731 185.4
D 2 14 80108 428.21 754 731 185.4

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