ASTROSAT CZTI

Data Quality Report

Orbit 15117

Creation date: 2024-06-27T17:03:59.562350
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/AS1G08_046T09_9000002226_15117cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15117cztM0_level2_quad_clean.evt
Size (bytes)672,860,16098,510,400
Size641.7 MB 93.9 MB
Events in quadrant A3,637,320645,826
Events in quadrant B6,787,818593,952
Events in quadrant C5,148,776623,739
Events in quadrant D4,287,436589,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158203
B0251722
C0207582
D0181302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76221441.889268%
B7622126616.609814%
C76222373.109420%
D76224205.510365%

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 8063 7625 5 5 0.06% 0.07%
B 8063 7625 828 828 10.27% 10.86%
C 8063 7625 85 85 1.05% 1.11%
D 8063 7625 329 329 4.08% 4.31%

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 12 189 52215 276.67 911 893 185.5
A 13 248 44928 237.39 911 893 185.5
A 15 69 18443 94.61 911 893 185.5
B 10 245 3031056 18739.4 844 822 161.7
B 3 64 338554 2088.58 844 822 161.7
B 0 190 24206 144.61 844 822 161.7
C 3 233 1175943 5807.92 875 878 202.3
C 4 254 531986 2625.07 875 878 202.3
C 3 234 7349 31.98 875 878 202.3
D 1 255 857708 4031.48 867 842 212.5
D 9 85 32991 151.26 867 842 212.5
D 2 234 29976 137.07 867 842 212.5

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