ASTROSAT CZTI

Data Quality Report

Orbit 09577

Creation date: 2024-06-27T15:47:58.344079
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/AS1G07_042T01_9000001360_09577cztM0_level2.evt modeM0/AS1G07_042T01_9000001360_09577cztM0_level2_quad_clean.evt
Size (bytes)330,408,00064,445,760
Size315.1 MB 61.5 MB
Events in quadrant A2,573,468403,658
Events in quadrant B2,376,036412,191
Events in quadrant C2,229,406404,922
Events in quadrant D2,496,219389,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129332049
B0119081804
C0116371761
D0126132024

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011816
B011820
C011816
D011814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4812751.558603%
B4849611.257991%
C4856390.803130%
D4839751.549907%

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 6768 5106 2 2 0.03% 0.04%
B 6768 5148 6 6 0.09% 0.12%
C 6768 5152 0 0 0.00% 0.00%
D 6768 5145 14 14 0.21% 0.27%

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 136686 1134.84 586 575 119.9
A 1 178 66041 545.83 586 575 119.9
A 1 161 63164 521.84 586 575 119.9
B 10 245 71185 619.33 591 577 114.0
B 12 111 13011 109.06 591 577 114.0
B 11 111 10712 88.9 591 577 114.0
C 13 61 4169 26.95 571 575 133.3
C 12 4 1803 9.21 571 575 133.3
C 3 202 1408 6.25 571 575 133.3
D 1 52 156078 1049.62 565 554 148.2
D 2 136 63837 427.09 565 554 148.2
D 10 172 32140 213.17 565 554 148.2

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