ASTROSAT CZTI

Data Quality Report

Orbit 09785

Creation date: 2024-06-27T15:50:37.786446
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_080T01_9000001392_09785cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09785cztM0_level2_quad_clean.evt
Size (bytes)446,022,72066,911,040
Size425.4 MB 63.8 MB
Events in quadrant A3,008,397395,709
Events in quadrant B3,140,410405,078
Events in quadrant C3,051,238404,955
Events in quadrant D3,883,432384,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127943
B0130702
C0129322
D0156272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240610.977564%
B6240781.250000%
C6240661.057692%
D62401312.099359%

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 7530 6241 0 0 0.00% 0.00%
B 7530 6241 2 2 0.03% 0.03%
C 7530 6241 7 7 0.09% 0.11%
D 7530 6241 62 62 0.82% 0.99%

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 15 7882 45.85 778 763 155.3
A 0 226 7178 41.32 778 763 155.3
A 15 239 6775 38.72 778 763 155.3
B 4 239 34556 231.17 784 766 146.2
B 0 187 30161 201.1 784 766 146.2
B 0 214 22756 150.44 784 766 146.2
C 14 234 49149 274.62 769 775 176.1
C 13 61 5816 28.62 769 775 176.1
C 14 67 3728 16.76 769 775 176.1
D 1 52 525514 2868.55 755 737 182.9
D 2 152 163273 888.46 755 737 182.9
D 1 239 131154 712.89 755 737 182.9

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