ASTROSAT CZTI

Data Quality Report

Orbit 15825

Creation date: 2024-06-27T17:14:03.364713
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/AS1A04_143T01_9000002344_15825cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15825cztM0_level2_quad_clean.evt
Size (bytes)454,838,40081,276,480
Size433.8 MB 77.5 MB
Events in quadrant A3,052,734509,117
Events in quadrant B4,026,698511,030
Events in quadrant C3,145,455501,661
Events in quadrant D3,111,993490,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014416
B014412
C014416
D014414

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148271460
B0176961634
C0148671400
D0149941497

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64343064.755984%
B63824647.270448%
C64583104.800248%
D64132654.132231%

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 7119 6744 0 0 0.00% 0.00%
B 7133 6724 116 116 1.63% 1.73%
C 7125 6774 0 0 0.00% 0.00%
D 7118 6727 3 3 0.04% 0.04%

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 9 143 7606 42.14 790 771 162.2
A 0 226 6952 38.11 790 771 162.2
A 15 239 6561 35.7 790 771 162.2
B 10 245 839760 5456.78 776 754 153.8
B 4 173 78445 505.29 776 754 153.8
B 4 216 34318 218.3 776 754 153.8
C 14 238 115688 636.21 763 767 180.6
C 3 233 33032 178.62 763 767 180.6
C 7 247 16267 85.81 763 767 180.6
D 1 52 90681 468.26 776 751 192.1
D 7 223 36910 188.28 776 751 192.1
D 2 234 26605 134.62 776 751 192.1

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