ASTROSAT CZTI

Data Quality Report

Orbit 42081

Creation date: 2024-06-27T22:36:36.089139
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/AS1A12_044T22_9000005740_42081cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42081cztM0_level2_quad_clean.evt
Size (bytes)312,396,48089,179,200
Size297.9 MB 85.0 MB
Events in quadrant A3,613,564591,566
Events in quadrant B2,496,699618,778
Events in quadrant C2,480,581591,110
Events in quadrant D2,572,586539,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139363
B0108662
C0104512
D0112242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51371402.725326%
B5137450.875998%
C513740.077866%
D5137330.642398%

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 7019 5138 90 90 1.28% 1.75%
B 7019 5138 18 18 0.26% 0.35%
C 7019 5138 0 0 0.00% 0.00%
D 7019 5138 28 28 0.40% 0.54%

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 15 222 821882 6850.68 579 567 119.9
A 10 83 511474 4261.53 579 567 119.9
A 15 223 27279 222.81 579 567 119.9
B 5 255 78698 688.6 584 568 113.5
B 3 112 71369 624.0 584 568 113.5
B 5 168 16060 136.54 584 568 113.5
C 15 214 212376 1568.37 578 583 135.0
C 15 111 8505 58.66 578 583 135.0
C 12 249 4503 29.03 578 583 135.0
D 13 249 118296 830.01 573 556 141.9
D 12 6 90623 634.93 573 556 141.9
D 1 52 67792 473.98 573 556 141.9

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