ASTROSAT CZTI

Data Quality Report

Orbit 09861

Creation date: 2024-06-27T15:51:34.189639
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_117T06_9000001404_09861cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09861cztM0_level2_quad_clean.evt
Size (bytes)1,581,096,960272,036,160
Size1.5 GB 259.4 MB
Events in quadrant A10,950,0541,666,497
Events in quadrant B11,378,5831,712,695
Events in quadrant C12,660,6111,652,455
Events in quadrant D11,308,0371,593,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049136528
B049755555
C054580703
D050763530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048010
B048010
C04804
D048010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234774952.108447%
B234665912.518537%
C234345842.492105%
D234743731.588992%

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 26205 23677 0 0 0.00% 0.00%
B 26205 23658 24 24 0.09% 0.10%
C 26205 23655 155 155 0.59% 0.66%
D 26205 23663 36 36 0.14% 0.15%

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 0 226 25862 40.18 2840 2782 574.4
A 12 194 22448 34.24 2840 2782 574.4
A 15 174 14358 20.15 2840 2782 574.4
B 4 81 162476 293.84 2833 2760 543.5
B 0 229 101434 181.54 2833 2760 543.5
B 0 85 91578 163.4 2833 2760 543.5
C 4 254 1714745 2692.22 2737 2754 635.9
C 14 234 255410 397.32 2737 2754 635.9
C 13 61 20502 27.91 2737 2754 635.9
D 10 172 288943 405.46 2720 2662 706.1
D 1 52 276282 387.53 2720 2662 706.1
D 8 32 199831 279.25 2720 2662 706.1

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