ASTROSAT CZTI

Data Quality Report

Orbit 14621

Creation date: 2024-06-27T16:57:36.442108
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_016T01_9000002152_14621cztM0_level2.evt modeM0/AS1A04_016T01_9000002152_14621cztM0_level2_quad_clean.evt
Size (bytes)541,670,40090,875,520
Size516.6 MB 86.7 MB
Events in quadrant A3,592,478574,125
Events in quadrant B3,588,253583,572
Events in quadrant C4,412,538572,787
Events in quadrant D4,341,761539,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151032
B0151182
C0178232
D0177762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6925941.357401%
B69251822.628159%
C69251101.588448%
D69253825.516245%

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 9126 6928 0 0 0.00% 0.00%
B 9126 6928 5 5 0.05% 0.07%
C 9126 6928 0 0 0.00% 0.00%
D 9126 6928 263 263 2.88% 3.80%

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 92099 505.55 885 865 180.5
A 1 178 30394 163.63 885 865 180.5
A 1 161 27971 150.2 885 865 180.5
B 0 189 61194 355.32 886 863 169.8
B 0 229 41480 239.21 886 863 169.8
B 12 111 20888 117.94 886 863 169.8
C 3 233 1026794 5079.16 868 873 202.0
C 13 61 6292 26.83 868 873 202.0
C 14 234 2400 7.56 868 873 202.0
D 10 199 1057430 5253.8 845 826 201.1
D 2 234 21902 104.8 845 826 201.1
D 14 35 17913 84.96 845 826 201.1

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