ASTROSAT CZTI

Data Quality Report

Orbit 09061

Creation date: 2024-06-27T15:40:45.154576
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/AS1A03_046T01_9000001260_09061cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09061cztM0_level2_quad_clean.evt
Size (bytes)397,149,12061,496,640
Size378.8 MB 58.6 MB
Events in quadrant A2,920,590373,537
Events in quadrant B2,770,479378,095
Events in quadrant C2,619,534375,127
Events in quadrant D3,352,323360,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012414
B012416
C012424
D012420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132491460
B0129451500
C0125631481
D0157442436

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54041112.054034%
B53751031.916279%
C5363751.398471%
D52681903.606682%

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 7341 5878 4 4 0.05% 0.07%
B 7341 5872 7 7 0.10% 0.12%
C 7341 5853 2 2 0.03% 0.03%
D 7341 5793 91 91 1.24% 1.57%

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 8 5 213274 1571.48 679 664 135.3
A 15 174 45108 328.5 679 664 135.3
A 1 162 29097 210.16 679 664 135.3
B 10 16 95473 746.43 680 664 127.0
B 0 219 30402 234.13 680 664 127.0
B 12 111 12969 96.88 680 664 127.0
C 14 234 19262 122.86 665 669 151.3
C 13 61 5035 28.85 665 669 151.3
C 12 4 3669 19.82 665 669 151.3
D 1 52 665438 4227.24 646 630 157.3
D 2 14 181553 1150.41 646 630 157.3
D 8 195 35405 221.12 646 630 157.3

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