ASTROSAT CZTI

Data Quality Report

Orbit 25003

Creation date: 2024-06-27T19:12:36.147448
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/AS1A07_127T03_9000003662_25003cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25003cztM0_level2_quad_clean.evt
Size (bytes)495,953,28097,329,600
Size473.0 MB 92.8 MB
Events in quadrant A3,371,024617,009
Events in quadrant B3,453,930629,032
Events in quadrant C3,571,810607,507
Events in quadrant D4,137,260595,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146692
B0148483
C0150232
D0169222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71462072.896725%
B71462183.050658%
C71462163.022670%
D71461692.364959%

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 7241 7148 0 0 0.00% 0.00%
B 7241 7148 1 1 0.01% 0.01%
C 7241 7148 0 0 0.00% 0.00%
D 7241 7148 9 9 0.12% 0.13%

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 11312 58.97 872 850 177.4
A 3 137 8200 41.43 872 850 177.4
A 0 226 7409 36.97 872 850 177.4
B 0 190 22861 130.15 866 842 169.2
B 12 111 20899 118.56 866 842 169.2
B 11 111 19096 107.9 866 842 169.2
C 7 247 158057 796.15 839 845 197.5
C 14 238 131284 660.57 839 845 197.5
C 3 233 11678 54.86 839 845 197.5
D 8 195 559528 2657.53 855 826 210.2
D 7 238 313252 1486.09 855 826 210.2
D 2 234 30220 139.82 855 826 210.2

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