ASTROSAT CZTI

Data Quality Report

Orbit 10635

Creation date: 2024-06-27T16:01:46.726398
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/AS1T01_191T01_9000001536_10635cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10635cztM0_level2_quad_clean.evt
Size (bytes)454,057,92086,474,880
Size433.0 MB 82.5 MB
Events in quadrant A2,688,219573,959
Events in quadrant B3,641,507559,337
Events in quadrant C2,658,218568,093
Events in quadrant D4,385,711528,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118542
B0145021
C0117891
D0168031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5566460.826446%
B55662384.275961%
C5566190.341358%
D55661362.443406%

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 6656 5567 0 0 0.00% 0.00%
B 6656 5567 122 122 1.83% 2.19%
C 6656 5567 3 3 0.05% 0.05%
D 6656 5567 123 123 1.85% 2.21%

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 13 251 63256 444.58 676 665 140.8
A 1 162 11366 76.01 676 665 140.8
A 0 226 6143 38.91 676 665 140.8
B 4 239 853612 6665.67 667 654 128.0
B 0 219 41558 319.65 667 654 128.0
B 0 187 35277 270.57 667 654 128.0
C 4 254 120533 794.74 646 654 150.8
C 0 207 8664 53.1 646 654 150.8
C 13 61 4897 28.13 646 654 150.8
D 1 20 419996 2668.18 639 624 157.2
D 5 222 407280 2587.27 639 624 157.2
D 2 16 353789 2246.95 639 624 157.2

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