ASTROSAT CZTI

Data Quality Report

Orbit 23452

Creation date: 2024-06-27T18:54:31.243761
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/AS1A07_100T02_9000003470_23452cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23452cztM0_level2_quad_clean.evt
Size (bytes)609,796,80083,609,280
Size581.5 MB 79.7 MB
Events in quadrant A3,464,646540,613
Events in quadrant B3,568,864549,007
Events in quadrant C3,385,373524,594
Events in quadrant D7,580,474435,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146511
B0148671
C0142931
D0271441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68991281.855341%
B68991852.681548%
C69001351.956522%
D6900149521.666667%

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 7514 6899 14 14 0.19% 0.20%
B 7514 6899 41 41 0.55% 0.59%
C 7515 6900 0 0 0.00% 0.00%
D 7515 6900 1122 1122 14.93% 16.26%

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 0 31 89915 522.81 849 832 170.4
A 12 96 69162 401.02 849 832 170.4
A 15 174 27728 157.85 849 832 170.4
B 5 172 179441 1122.52 842 821 159.1
B 0 229 29135 177.94 842 821 159.1
B 0 228 21391 129.27 842 821 159.1
C 14 238 127127 664.86 818 824 190.0
C 7 247 32302 165.7 818 824 190.0
C 3 233 22342 113.27 818 824 190.0
D 1 52 3476746 19146.09 746 722 181.6
D 7 238 967237 5323.61 746 722 181.6
D 12 227 133488 731.28 746 722 181.6

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