ASTROSAT CZTI

Data Quality Report

Orbit 18818

Creation date: 2024-06-27T17:55:14.404692
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/AS1A05_173T01_9000002812_18818cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18818cztM0_level2_quad_clean.evt
Size (bytes)439,050,24080,075,520
Size418.7 MB 76.4 MB
Events in quadrant A3,145,666514,317
Events in quadrant B3,261,578517,191
Events in quadrant C3,289,820494,136
Events in quadrant D3,193,235481,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126941
B0129801
C0130821
D0129911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5980851.421405%
B5980821.371237%
C59801181.973244%
D5980580.969900%

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 7185 5981 6 6 0.08% 0.10%
B 7185 5981 9 9 0.13% 0.15%
C 7185 5981 35 35 0.49% 0.59%
D 7185 5981 22 22 0.31% 0.37%

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 4 2 73954 455.11 796 782 160.8
A 13 254 9033 51.32 796 782 160.8
A 0 226 6911 38.12 796 782 160.8
B 0 229 38862 255.33 783 768 149.2
B 4 171 36219 237.61 783 768 149.2
B 6 36 34147 223.72 783 768 149.2
C 0 207 217279 1240.93 750 757 174.5
C 14 238 117189 667.29 750 757 174.5
C 3 233 33364 186.88 750 757 174.5
D 9 1 128675 683.43 772 752 187.2
D 7 238 51044 268.69 772 752 187.2
D 2 234 24503 126.89 772 752 187.2

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