ASTROSAT CZTI

Data Quality Report

Orbit 17794

Creation date: 2024-06-27T17:40:59.950301
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_015T01_9000002650_17794cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17794cztM0_level2_quad_clean.evt
Size (bytes)483,966,72089,688,960
Size461.5 MB 85.5 MB
Events in quadrant A3,344,512557,908
Events in quadrant B3,612,484568,266
Events in quadrant C3,469,241545,003
Events in quadrant D3,738,468540,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149301
B0154921
C0149721
D0161101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72332543.511683%
B72332954.078529%
C72332773.829670%
D72332863.954099%

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 7268 7234 1 1 0.01% 0.01%
B 7268 7234 14 14 0.19% 0.19%
C 7268 7234 0 0 0.00% 0.00%
D 7268 7234 66 66 0.91% 0.91%

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 15 174 22853 125.18 864 844 175.8
A 0 226 7417 37.39 864 844 175.8
A 3 137 6630 32.91 864 844 175.8
B 7 220 128835 760.3 862 840 168.3
B 0 229 38419 223.22 862 840 168.3
B 0 219 22948 131.32 862 840 168.3
C 14 238 126139 643.88 825 827 194.6
C 3 233 66975 339.88 825 827 194.6
C 9 160 21131 104.32 825 827 194.6
D 7 238 424335 2050.23 839 816 206.6
D 1 52 84952 407.3 839 816 206.6
D 2 234 32579 153.76 839 816 206.6

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