ASTROSAT CZTI

Data Quality Report

Orbit 08631

Creation date: 2024-06-27T15:35:13.857984
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/AS1G07_024T01_9000001206_08631cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08631cztM0_level2_quad_clean.evt
Size (bytes)435,758,400123,347,520
Size415.6 MB 117.6 MB
Events in quadrant A3,076,824805,867
Events in quadrant B3,340,686837,200
Events in quadrant C3,039,149820,737
Events in quadrant D3,262,302782,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01447224
B01482220
C01438425
D01510027

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70221772.520649%
B70241482.107062%
C7021650.925794%
D70211081.538242%

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 7108 7034 5 5 0.07% 0.07%
B 7108 7034 3 3 0.04% 0.04%
C 7108 7034 1 1 0.01% 0.01%
D 7108 7032 22 22 0.31% 0.31%

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 15 174 45251 274.74 786 767 161.9
A 5 16 7312 40.42 786 767 161.9
A 0 226 7295 40.32 786 767 161.9
B 0 214 89870 582.83 798 777 152.9
B 11 51 89207 578.5 798 777 152.9
B 4 48 18444 115.58 798 777 152.9
C 14 234 12772 67.67 768 769 177.4
C 8 208 11245 59.06 768 769 177.4
C 8 222 6347 31.45 768 769 177.4
D 12 221 100463 530.92 766 741 187.8
D 10 253 98371 519.79 766 741 187.8
D 12 233 44749 234.3 766 741 187.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter