ASTROSAT CZTI

Data Quality Report

Orbit 02823

Creation date: 2024-06-27T14:22:06.123259
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/AS1P01_999T99_9000000410_02823cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02823cztM0_level2_quad_clean.evt
Size (bytes)1,677,490,56055,344,960
Size1.6 GB 52.8 MB
Events in quadrant A8,492,599364,615
Events in quadrant B12,435,606361,540
Events in quadrant C12,512,713335,282
Events in quadrant D16,989,269211,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292982
B0411181
C0413921
D0553101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57221472.569032%
B5722121621.251311%
C5722153826.878714%
D5722483784.533380%

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 7017 5723 801 801 11.42% 14.00%
B 7017 5723 2994 2994 42.67% 52.32%
C 7017 5722 2987 2987 42.57% 52.20%
D 7017 5723 5470 5470 77.95% 95.58%

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 0 13 606291 1339.7 1981 1963 451.1
A 0 31 106665 232.11 1981 1963 451.1
A 0 117 40954 86.44 1981 1963 451.1
B 0 191 997439 2142.16 2010 1988 464.7
B 0 219 963656 2069.46 2010 1988 464.7
B 1 158 837227 1797.39 2010 1988 464.7
C 0 219 1714519 3358.45 1748 1803 510.0
C 1 16 1710527 3350.62 1748 1803 510.0
C 1 192 1008850 1974.71 1748 1803 510.0
D 0 226 7034367 20336.64 1155 1168 345.8
D 1 31 4357893 12597.56 1155 1168 345.8
D 1 66 229067 658.97 1155 1168 345.8

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
Veto Counter