ASTROSAT CZTI

Data Quality Report

Orbit 43734

Creation date: 2024-06-27T22:55:08.436550
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/AS1A13_003T01_9000005902_43734cztM0_level2.fits modeM0/AS1A13_003T01_9000005902_43734cztM0_level2_quad_clean.evt
Size (bytes)619,712,640110,318,400
Size591.0 MB 105.2 MB
Events in quadrant A4,392,365800,997
Events in quadrant B3,778,740829,468
Events in quadrant C4,505,265761,522
Events in quadrant D9,770,112504,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172472
B0152142
C0173792
D0334382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63642193.441232%
B63642223.488372%
C63643665.751100%
D6364227935.810811%

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 7589 6365 73 73 0.96% 1.15%
B 7589 6365 68 68 0.90% 1.07%
C 7589 6365 296 296 3.90% 4.65%
D 7589 6365 1870 1870 24.64% 29.38%

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 909432 5565.71 799 785 163.3
A 15 223 282463 1725.36 799 785 163.3
A 15 174 31739 189.6 799 785 163.3
B 5 235 297548 1940.57 794 771 152.9
B 0 200 160369 1043.58 794 771 152.9
B 5 172 88629 574.49 794 771 152.9
C 15 174 859798 4812.39 764 769 178.5
C 15 157 243153 1357.87 764 769 178.5
C 15 158 241311 1347.55 764 769 178.5
D 7 80 3516622 20944.03 662 640 167.9
D 3 13 892074 5310.1 662 640 167.9
D 13 171 713613 4247.04 662 640 167.9

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