ASTROSAT CZTI

Data Quality Report

Orbit 12824

Creation date: 2024-06-27T16:32:47.370675
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_071T01_9000001888_12824cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12824cztM0_level2_quad_clean.evt
Size (bytes)511,217,28069,877,440
Size487.5 MB 66.6 MB
Events in quadrant A3,502,290428,534
Events in quadrant B4,721,168401,731
Events in quadrant C3,288,958425,711
Events in quadrant D3,535,424412,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144693
B0185152
C0136112
D0144942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64031121.749180%
B64035017.824457%
C6403741.155708%
D6403801.249414%

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 7729 6405 0 0 0.00% 0.00%
B 7729 6405 304 304 3.93% 4.75%
C 7729 6405 0 0 0.00% 0.00%
D 7729 6405 16 16 0.21% 0.25%

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 103277 591.78 868 852 173.1
A 15 222 57976 330.05 868 852 173.1
A 0 226 7822 40.27 868 852 173.1
B 4 239 1162567 7552.17 828 810 153.8
B 0 219 180147 1165.8 828 810 153.8
B 0 197 74159 476.81 828 810 153.8
C 13 61 6084 27.17 842 846 192.8
C 14 234 4849 20.76 842 846 192.8
C 12 4 2079 6.4 842 846 192.8
D 1 52 105512 484.04 834 820 216.3
D 8 195 95471 437.62 834 820 216.3
D 2 136 80623 368.97 834 820 216.3

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