ASTROSAT CZTI

Data Quality Report

Orbit 23035

Creation date: 2024-06-27T18:49:04.635970
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/AS1C05_004T01_9000003404_23035cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23035cztM0_level2_quad_clean.evt
Size (bytes)483,471,360111,467,520
Size461.1 MB 106.3 MB
Events in quadrant A3,285,190729,313
Events in quadrant B3,559,816743,078
Events in quadrant C3,380,983709,165
Events in quadrant D3,922,991689,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147331
B0154131
C0149271
D0166821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7254620.854701%
B72551281.764300%
C72551181.626465%
D72551652.274294%

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 7614 7255 0 0 0.00% 0.00%
B 7615 7256 31 31 0.41% 0.43%
C 7615 7256 10 10 0.13% 0.14%
D 7615 7256 83 83 1.09% 1.14%

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 13 254 11145 59.9 850 831 172.2
A 3 137 7626 39.46 850 831 172.2
A 0 226 7277 37.43 850 831 172.2
B 3 64 150196 922.0 841 818 162.0
B 0 189 66847 407.55 841 818 162.0
B 4 216 21435 127.25 841 818 162.0
C 14 238 128471 676.82 810 814 188.6
C 0 10 55444 289.64 810 814 188.6
C 0 207 35317 182.93 810 814 188.6
D 2 136 344474 1734.82 820 795 198.1
D 13 153 125804 631.02 820 795 198.1
D 1 52 113986 571.36 820 795 198.1

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