ASTROSAT CZTI

Data Quality Report

Orbit 20211027_A11_005T05_9000004744_level2

Creation date: 2021-11-01T12:04:01.839619
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_005T05_9000004744cztM0_level2_bc.evt modeM0/AS1A11_005T05_9000004744cztM0_level2_quad_clean.evt
Size (bytes)266,313,60075,116,160
Size254.0 MB 71.6 MB
Events in quadrant A1,122,790492,013
Events in quadrant B1,376,991493,998
Events in quadrant C1,367,673496,167
Events in quadrant D3,852,205443,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104350
B0114810
C0111320
D0197670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974140.281464%
B4974721.447527%
C4974611.226377%
D49744489.006836%

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 6766 4973 0 0 0.00% 0.00%
B 6766 4973 6 6 0.09% 0.12%
C 6766 4973 7 7 0.10% 0.14%
D 6766 4973 78 78 1.15% 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 14 63 28884 470.77 266 261 60.8
A 7 16 28618 466.4 266 261 60.8
A 9 143 14612 236.04 266 261 60.8
B 5 172 158331 2914.7 267 261 54.2
B 0 199 36351 665.47 267 261 54.2
B 0 219 35534 650.41 267 261 54.2
C 0 10 174155 2757.96 265 263 63.1
C 14 67 101308 1602.59 265 263 63.1
C 0 207 19796 309.8 265 263 63.1
D 8 195 1130731 17151.73 254 247 65.9
D 2 250 565708 8579.19 254 247 65.9
D 10 203 516988 7840.0 254 247 65.9

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