ASTROSAT CZTI

Data Quality Report

Orbit 12885

Creation date: 2024-06-27T16:33:34.162090
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/AS1C03_001T01_9000001894_12885cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12885cztM0_level2_quad_clean.evt
Size (bytes)491,892,480118,330,560
Size469.1 MB 112.8 MB
Events in quadrant A3,086,776810,192
Events in quadrant B4,269,937779,482
Events in quadrant C2,891,279798,680
Events in quadrant D4,206,400741,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134502
B0169011
C0132191
D0170071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512330.506757%
B65124857.447789%
C6512270.414619%
D65124326.633907%

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 7108 6514 0 0 0.00% 0.00%
B 7108 6514 258 258 3.63% 3.96%
C 7108 6514 0 0 0.00% 0.00%
D 7108 6514 273 273 3.84% 4.19%

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 1 162 67934 437.49 754 736 153.6
A 1 178 37765 241.07 754 736 153.6
A 1 161 31586 200.85 754 736 153.6
B 4 239 944908 6944.44 723 705 136.0
B 0 85 191437 1402.8 723 705 136.0
B 0 219 92005 671.49 723 705 136.0
C 3 233 33897 197.18 733 735 168.2
C 13 61 5476 28.19 733 735 168.2
C 3 202 1855 6.66 733 735 168.2
D 1 52 1185060 7061.45 706 684 167.7
D 13 122 242712 1443.01 706 684 167.7
D 4 95 35039 204.83 706 684 167.7

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