ASTROSAT CZTI

Data Quality Report

Orbit 37649

Creation date: 2024-06-27T21:42:37.343286
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_075T01_9000005342_37649cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37649cztM0_level2_quad_clean.evt
Size (bytes)464,163,84074,085,120
Size442.7 MB 70.7 MB
Events in quadrant A4,640,275462,566
Events in quadrant B3,162,762479,894
Events in quadrant C2,957,997478,606
Events in quadrant D2,939,749454,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176383
B0128292
C0118932
D0121962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525054810.438095%
B52501432.723810%
C5250390.742857%
D5250551.047619%

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 7163 5251 373 373 5.21% 7.10%
B 7162 5249 102 102 1.42% 1.94%
C 7162 5249 28 28 0.39% 0.53%
D 7162 5249 34 34 0.47% 0.65%

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 1718147 13833.07 622 611 124.2
A 10 83 290971 2338.57 622 611 124.2
A 9 143 92740 742.01 622 611 124.2
B 5 172 455631 3754.68 646 629 121.2
B 15 35 51366 418.68 646 629 121.2
B 0 230 37476 304.06 646 629 121.2
C 15 214 242481 1639.66 644 650 147.5
C 14 254 116929 788.39 644 650 147.5
C 0 10 77789 523.02 644 650 147.5
D 13 249 108378 698.15 640 624 154.3
D 2 249 102107 657.52 640 624 154.3
D 2 250 93348 600.77 640 624 154.3

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