ASTROSAT CZTI

Data Quality Report

Orbit 17150

Creation date: 2024-06-27T17:32:43.184085
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/AS1A05_194T03_9000002544_17150cztM0_level2.evt modeM0/AS1A05_194T03_9000002544_17150cztM0_level2_quad_clean.evt
Size (bytes)526,173,12091,198,080
Size501.8 MB 87.0 MB
Events in quadrant A3,067,195599,336
Events in quadrant B3,277,981608,055
Events in quadrant C6,128,064555,578
Events in quadrant D3,040,848564,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131902
B0139262
C0226492
D0132502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210320.515298%
B6210550.885668%
C62102764.444444%
D6210460.740741%

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 7445 6211 0 0 0.00% 0.00%
B 7445 6211 5 5 0.07% 0.08%
C 7445 6210 20 20 0.27% 0.32%
D 7445 6211 22 22 0.30% 0.35%

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 4 2 41013 258.02 778 762 156.0
A 12 189 32838 205.62 778 762 156.0
A 0 226 6982 39.87 778 762 156.0
B 0 189 99120 672.05 779 760 146.4
B 0 197 77171 522.08 779 760 146.4
B 6 36 16466 107.31 779 760 146.4
C 3 233 3124449 18096.97 739 745 172.6
C 14 238 114436 658.66 739 745 172.6
C 13 61 5289 26.33 739 745 172.6
D 1 52 90023 485.09 759 737 184.1
D 2 234 29153 154.38 759 737 184.1
D 10 70 28996 153.53 759 737 184.1

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