ASTROSAT CZTI

Data Quality Report

Orbit 34148

Creation date: 2024-06-27T20:57:06.519430
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/AS1A11_059T05_9000004876_34148cztM0_level2.evt modeM0/AS1A11_059T05_9000004876_34148cztM0_level2_quad_clean.evt
Size (bytes)630,048,96047,162,880
Size600.9 MB 45.0 MB
Events in quadrant A2,555,431277,340
Events in quadrant B8,764,598248,140
Events in quadrant C3,436,018279,843
Events in quadrant D3,977,285261,869

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104583
B0294162
C0133692
D0151592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514050.097276%
B5140281854.824903%
C51401502.918288%
D5140791.536965%

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 7264 5141 0 0 0.00% 0.00%
B 7264 5141 2567 2567 35.34% 49.93%
C 7264 5141 116 116 1.60% 2.26%
D 7264 5141 66 66 0.91% 1.28%

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 20660 152.92 653 642 130.9
A 13 6 13497 98.2 653 642 130.9
A 13 254 8646 61.14 653 642 130.9
B 5 31 3336048 32227.18 548 535 103.5
B 5 15 2362273 22818.73 548 535 103.5
B 5 14 682208 6586.21 548 535 103.5
C 0 10 447091 3023.05 643 650 147.7
C 15 214 219159 1479.62 643 650 147.7
C 14 254 158095 1066.13 643 650 147.7
D 8 195 1046748 6692.36 641 626 156.3
D 10 118 198306 1264.62 641 626 156.3
D 13 249 158527 1010.14 641 626 156.3

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