ASTROSAT CZTI

Data Quality Report

Orbit 37610

Creation date: 2024-06-27T21:42:10.564773
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_37610cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37610cztM0_level2_quad_clean.evt
Size (bytes)409,043,52071,087,040
Size390.1 MB 67.8 MB
Events in quadrant A2,942,445436,522
Events in quadrant B3,093,646450,193
Events in quadrant C2,793,389453,570
Events in quadrant D3,179,120422,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123133
B0129422
C0117542
D0135132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5579190.340563%
B55791552.778276%
C5579280.501882%
D55791803.226385%

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 9676 5581 10 10 0.10% 0.18%
B 9676 5579 104 104 1.07% 1.86%
C 9676 5579 20 20 0.21% 0.36%
D 9676 5580 164 164 1.69% 2.94%

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 311156 2452.67 628 616 126.6
A 9 143 117355 922.01 628 616 126.6
A 13 248 31625 244.91 628 616 126.6
B 5 172 342373 2838.58 624 607 120.4
B 5 200 141904 1173.56 624 607 120.4
B 0 230 45366 371.75 624 607 120.4
C 15 214 257150 1800.52 613 617 142.5
C 0 10 92487 644.8 613 617 142.5
C 14 254 48153 333.64 613 617 142.5
D 2 249 292063 2005.17 602 586 145.4
D 12 227 208219 1428.38 602 586 145.4
D 13 200 122991 842.07 602 586 145.4

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