ASTROSAT CZTI

Data Quality Report

Orbit 28675

Creation date: 2024-06-27T19:54:47.520333
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/AS1A10_110T03_9000004114_28675cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28675cztM0_level2_quad_clean.evt
Size (bytes)583,436,16084,251,520
Size556.4 MB 80.3 MB
Events in quadrant A3,467,476543,985
Events in quadrant B3,566,982548,836
Events in quadrant C3,536,104526,630
Events in quadrant D6,682,817502,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140402
B0143612
C0142682
D0244322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61461041.692158%
B61471332.163657%
C61471522.472751%
D614677612.626098%

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 7466 6146 0 0 0.00% 0.00%
B 7467 6147 4 4 0.05% 0.07%
C 7467 6147 0 0 0.00% 0.00%
D 7466 6146 687 687 9.20% 11.18%

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 10687 55.31 897 884 177.2
A 3 137 7758 38.78 897 884 177.2
A 0 226 7698 38.44 897 884 177.2
B 15 33 122845 751.56 871 851 162.3
B 0 190 22611 134.06 871 851 162.3
B 12 111 19265 113.44 871 851 162.3
C 14 238 152174 776.66 854 864 194.8
C 14 254 18403 90.03 854 864 194.8
C 3 233 17476 85.27 854 864 194.8
D 1 52 2747740 13926.9 842 824 197.2
D 8 195 628946 3184.59 842 824 197.2
D 12 79 48693 242.7 842 824 197.2

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