ASTROSAT CZTI

Data Quality Report

Orbit 38453

Creation date: 2024-06-27T21:52:58.334160
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/AS1A12_018T01_9000005386_38453cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38453cztM0_level2_quad_clean.evt
Size (bytes)372,323,52099,267,840
Size355.1 MB 94.7 MB
Events in quadrant A3,185,406666,418
Events in quadrant B3,245,616671,858
Events in quadrant C2,923,619655,160
Events in quadrant D3,958,836591,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131803
B0137022
C0124452
D0159652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6022240.398539%
B6022891.477914%
C6022170.282298%
D60222484.118233%

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 7305 6023 13 13 0.18% 0.22%
B 7305 6023 61 61 0.84% 1.01%
C 7305 6023 11 11 0.15% 0.18%
D 7305 6023 198 198 2.71% 3.29%

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 425324 3114.53 670 658 136.4
A 9 143 68075 494.44 670 658 136.4
A 6 10 42793 309.02 670 658 136.4
B 0 183 200730 1565.32 662 642 127.8
B 5 184 131480 1023.57 662 642 127.8
B 4 232 120153 934.96 662 642 127.8
C 15 214 251245 1635.44 655 659 153.2
C 14 254 43074 276.82 655 659 153.2
C 15 159 28690 182.94 655 659 153.2
D 13 249 409983 2616.57 644 625 156.4
D 2 153 331267 2113.43 644 625 156.4
D 7 223 163670 1042.17 644 625 156.4

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