ASTROSAT CZTI

Data Quality Report

Orbit 09723

Creation date: 2024-06-27T15:49:45.956494
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/AS1A03_029T01_9000001384_09723cztM0_level2.evt modeM0/AS1A03_029T01_9000001384_09723cztM0_level2_quad_clean.evt
Size (bytes)456,304,32089,614,080
Size435.2 MB 85.5 MB
Events in quadrant A3,161,801569,508
Events in quadrant B3,275,510575,883
Events in quadrant C3,011,644568,139
Events in quadrant D3,916,262534,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01376414
B01432135
C01364932
D01629034

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6689450.672746%
B6682360.538761%
C6683250.374083%
D66862373.544720%

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 7655 6696 17 17 0.22% 0.25%
B 7655 6695 4 4 0.05% 0.06%
C 7655 6695 10 10 0.13% 0.15%
D 7655 6696 164 164 2.14% 2.45%

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 56110 348.0 780 764 159.0
A 1 162 50408 312.14 780 764 159.0
A 1 178 20688 125.27 780 764 159.0
B 0 219 60255 393.97 788 767 151.0
B 0 187 44255 288.01 788 767 151.0
B 0 246 43236 281.26 788 767 151.0
C 14 234 46520 260.46 756 760 175.7
C 10 22 14154 76.24 756 760 175.7
C 13 61 5660 27.89 756 760 175.7
D 1 52 736163 3995.93 738 720 184.0
D 10 199 287630 1558.89 738 720 184.0
D 7 46 41931 223.91 738 720 184.0

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