ASTROSAT CZTI

Data Quality Report

Orbit 09678

Creation date: 2024-06-27T15:49:17.582272
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_198T01_9000001376_09678cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09678cztM0_level2_quad_clean.evt
Size (bytes)609,099,84093,905,280
Size580.9 MB 89.6 MB
Events in quadrant A3,510,503603,716
Events in quadrant B3,373,408607,944
Events in quadrant C3,202,975600,946
Events in quadrant D7,881,979539,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148853
B0147152
C0144792
D0284202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7039120.170479%
B7039200.284131%
C7039350.497230%
D7039135119.193067%

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 8929 7041 0 0 0.00% 0.00%
B 8929 7041 5 5 0.06% 0.07%
C 8929 7041 24 24 0.27% 0.34%
D 8929 7041 1461 1461 16.36% 20.75%

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 15 244687 1485.09 814 796 164.2
A 1 162 74888 451.16 814 796 164.2
A 1 178 25417 149.92 814 796 164.2
B 0 214 79211 501.27 820 799 156.4
B 6 51 21161 130.17 820 799 156.4
B 0 219 20232 124.23 820 799 156.4
C 14 234 113184 609.86 791 791 184.3
C 13 61 5825 27.31 791 791 184.3
C 9 68 5325 24.6 791 791 184.3
D 1 52 4469888 24477.59 752 734 182.6
D 8 195 405376 2216.23 752 734 182.6
D 12 233 87008 472.52 752 734 182.6

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