ASTROSAT CZTI

Data Quality Report

Orbit 09211

Creation date: 2024-06-27T15:42:47.775531
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/AS1A02_178T01_9000001286_09211cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09211cztM0_level2_quad_clean.evt
Size (bytes)550,926,72082,373,760
Size525.4 MB 78.6 MB
Events in quadrant A5,090,568485,560
Events in quadrant B3,921,031505,627
Events in quadrant C3,515,456500,455
Events in quadrant D3,652,386486,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017010
B01706
C017018
D017018

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230573374
B0186632235
C0174621907
D0180612024

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72155938.218988%
B73983684.974317%
C74862783.713599%
D74743284.388547%

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 8604 8054 98 98 1.14% 1.22%
B 8604 8129 0 0 0.00% 0.00%
C 8604 8150 0 0 0.00% 0.00%
D 8604 8143 34 34 0.40% 0.42%

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 8 5 1416552 7798.51 875 853 181.5
A 15 174 133163 728.84 875 853 181.5
A 1 162 87174 475.51 875 853 181.5
B 8 234 231986 1302.91 907 883 177.4
B 0 245 52585 291.48 907 883 177.4
B 0 214 33216 182.28 907 883 177.4
C 3 233 18604 84.98 895 895 208.4
C 13 61 6847 28.56 895 895 208.4
C 8 222 2774 9.02 895 895 208.4
D 9 64 117416 526.5 892 867 221.4
D 7 71 47147 209.07 892 867 221.4
D 2 234 36036 158.87 892 867 221.4

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