ASTROSAT CZTI

Data Quality Report

Orbit 25471

Creation date: 2024-06-27T19:18:02.326328
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/AS1A09_085T02_9000003716_25471cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25471cztM0_level2_quad_clean.evt
Size (bytes)575,386,56070,032,960
Size548.7 MB 66.8 MB
Events in quadrant A4,005,889435,001
Events in quadrant B3,341,431441,928
Events in quadrant C3,340,769422,646
Events in quadrant D6,280,639350,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163380
B0140430
C0140040
D0230660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6742660.978938%
B6743721.067774%
C6743781.156755%
D6743108116.031440%

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 8697 6744 15 15 0.17% 0.22%
B 8698 6745 0 0 0.00% 0.00%
C 8698 6745 0 0 0.00% 0.00%
D 8698 6745 947 947 10.89% 14.04%

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 6 16 698069 4049.11 858 839 172.2
A 13 254 9850 52.33 858 839 172.2
A 3 137 7918 41.11 858 839 172.2
B 12 111 20021 118.22 852 832 162.3
B 11 111 18043 106.04 852 832 162.3
B 14 111 16775 98.23 852 832 162.3
C 14 238 132498 692.34 818 822 190.2
C 2 16 11887 58.18 818 822 190.2
C 3 233 6495 29.83 818 822 190.2
D 1 52 1810407 9804.14 759 738 184.6
D 7 238 1436508 7778.49 759 738 184.6
D 8 195 126280 680.14 759 738 184.6

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