ASTROSAT CZTI

Data Quality Report

Orbit 23172

Creation date: 2024-06-27T18:50:51.125802
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_148T05_9000003424_23172cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23172cztM0_level2_quad_clean.evt
Size (bytes)568,728,00072,167,040
Size542.4 MB 68.8 MB
Events in quadrant A3,412,826440,315
Events in quadrant B3,692,236448,730
Events in quadrant C4,511,721433,754
Events in quadrant D5,178,453420,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01282
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144025
B0152192
C01756611
D01978118

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0172
C0160
D0161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336861.357323%
B63371312.067224%
C63343805.999368%
D63325839.207202%

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 7557 6337 2 2 0.03% 0.03%
B 7557 6337 4 4 0.05% 0.06%
C 7557 6337 70 70 0.93% 1.10%
D 7557 6337 349 349 4.62% 5.51%

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 6 16 25677 140.16 879 863 177.0
A 13 254 9745 50.17 879 863 177.0
A 0 226 7660 38.39 879 863 177.0
B 0 190 230608 1389.71 879 860 165.3
B 0 245 21218 123.14 879 860 165.3
B 12 111 18751 108.22 879 860 165.3
C 8 208 853086 4326.89 846 855 197.0
C 0 10 190291 961.79 846 855 197.0
C 14 238 133930 675.64 846 855 197.0
D 7 238 1215908 5992.0 848 826 202.8
D 12 233 294349 1447.47 848 826 202.8
D 1 52 231386 1136.97 848 826 202.8

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