ASTROSAT CZTI

Data Quality Report

Orbit 32698

Creation date: 2024-06-27T20:40:56.992377
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/AS1T04_063T01_9000004724_32698cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32698cztM0_level2_quad_clean.evt
Size (bytes)550,972,80059,060,160
Size525.4 MB 56.3 MB
Events in quadrant A5,129,707340,961
Events in quadrant B3,069,292381,657
Events in quadrant C3,094,504366,452
Events in quadrant D5,044,083337,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186093
B0122802
C0122802
D0186342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516280115.517241%
B5162340.658659%
C5162841.627276%
D51623667.090275%

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 7135 5163 616 616 8.63% 11.93%
B 7135 5163 16 16 0.22% 0.31%
C 7135 5163 67 67 0.94% 1.30%
D 7135 5163 305 305 4.27% 5.91%

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 15 249 2591382 20397.22 635 624 127.0
A 12 247 26692 205.24 635 624 127.0
A 0 159 15692 118.63 635 624 127.0
B 0 219 176438 1394.88 684 675 126.0
B 3 26 73326 576.57 684 675 126.0
B 0 230 48321 378.12 684 675 126.0
C 0 10 394299 2632.85 646 652 149.5
C 3 233 47297 311.98 646 652 149.5
C 0 207 43029 283.43 646 652 149.5
D 7 80 573542 3872.85 627 616 147.9
D 8 195 433988 2929.5 627 616 147.9
D 2 249 432855 2921.84 627 616 147.9

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