ASTROSAT CZTI

Data Quality Report

Orbit 36974

Creation date: 2024-06-27T21:33:47.398306
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_079T01_9000005254_36974cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36974cztM0_level2_quad_clean.evt
Size (bytes)531,466,56065,476,800
Size506.8 MB 62.4 MB
Events in quadrant A2,660,122406,039
Events in quadrant B5,257,772387,769
Events in quadrant C2,871,253414,494
Events in quadrant D4,932,143387,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114633
B0194492
C0119962
D0185092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552470.126720%
B552458010.499638%
C5524200.362056%
D552465711.893555%

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 7137 5525 3 3 0.04% 0.05%
B 7137 5525 516 516 7.23% 9.34%
C 7137 5525 17 17 0.24% 0.31%
D 7136 5524 567 567 7.95% 10.26%

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 229130 1834.56 617 605 124.6
A 15 222 20144 156.86 617 605 124.6
A 9 143 9129 68.43 617 605 124.6
B 5 184 2428587 20984.61 596 581 115.7
B 0 229 152185 1310.27 596 581 115.7
B 0 221 85006 729.66 596 581 115.7
C 15 214 237658 1657.04 605 610 143.1
C 0 10 96764 672.15 605 610 143.1
C 0 207 84504 586.44 605 610 143.1
D 12 17 1644128 11701.99 570 554 140.5
D 2 250 577596 4108.45 570 554 140.5
D 4 239 261638 1858.88 570 554 140.5

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