ASTROSAT CZTI

Data Quality Report

Orbit 03476

Creation date: 2024-06-27T14:29:30.840547
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/AS1G05_083T03_9000000462_03476cztM0_level2.evt modeM0/AS1G05_083T03_9000000462_03476cztM0_level2_quad_clean.evt
Size (bytes)486,132,48073,434,240
Size463.6 MB 70.0 MB
Events in quadrant A4,856,155425,873
Events in quadrant B3,276,103451,911
Events in quadrant C3,413,200457,256
Events in quadrant D2,746,707446,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189022
B0140542
C0147392
D0131102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63404376.892744%
B6340380.599369%
C63401442.271293%
D6340180.283912%

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 7225 6341 232 232 3.21% 3.66%
B 7225 6341 3 3 0.04% 0.05%
C 7225 6341 89 89 1.23% 1.40%
D 7225 6341 6 6 0.08% 0.09%

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 0 118 1425547 9853.13 703 687 144.6
A 0 50 533731 3686.08 703 687 144.6
A 0 226 137198 943.99 703 687 144.6
B 15 204 234946 1645.33 732 715 142.4
B 2 249 125820 878.79 732 715 142.4
B 4 200 37467 258.16 732 715 142.4
C 7 220 634900 3827.02 706 709 165.7
C 1 192 6594 35.51 706 709 165.7
C 13 61 5955 31.66 706 709 165.7
D 13 223 21084 121.13 703 683 168.4
D 13 239 17342 98.91 703 683 168.4
D 2 206 13074 73.57 703 683 168.4

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
Veto Counter