ASTROSAT CZTI

Data Quality Report

Orbit 17099

Creation date: 2024-06-27T17:32:03.935908
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/AS1A05_004T06_9000002536_17099cztM0_level2.evt modeM0/AS1A05_004T06_9000002536_17099cztM0_level2_quad_clean.evt
Size (bytes)526,826,88087,750,720
Size502.4 MB 83.7 MB
Events in quadrant A3,708,839536,173
Events in quadrant B3,900,195543,177
Events in quadrant C3,885,147518,037
Events in quadrant D3,921,095508,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164772
B0167742
C0166522
D0173692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79323153.971256%
B79323404.286435%
C79323073.870398%
D79313093.896104%

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 7967 7933 0 0 0.00% 0.00%
B 7967 7933 9 9 0.11% 0.11%
C 7967 7933 4 4 0.05% 0.05%
D 7966 7932 94 94 1.18% 1.19%

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 4 2 32245 161.5 956 931 193.9
A 0 226 8339 38.21 956 931 193.9
A 3 137 7148 32.06 956 931 193.9
B 0 189 47173 249.58 957 928 185.3
B 0 197 38922 205.05 957 928 185.3
B 0 246 30067 157.26 957 928 185.3
C 14 238 142916 659.13 918 920 215.4
C 5 112 66922 306.37 918 920 215.4
C 3 233 55409 252.93 918 920 215.4
D 10 70 258939 1134.06 927 899 227.5
D 5 222 116528 508.18 927 899 227.5
D 2 234 30080 128.25 927 899 227.5

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