ASTROSAT CZTI

Data Quality Report

Orbit 17900

Creation date: 2024-06-27T17:42:23.316610
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_109T01_9000002662_17900cztM0_level2.evt modeM0/AS1A05_109T01_9000002662_17900cztM0_level2_quad_clean.evt
Size (bytes)468,872,64065,237,760
Size447.2 MB 62.2 MB
Events in quadrant A3,321,196381,488
Events in quadrant B3,505,115386,953
Events in quadrant C3,450,649371,404
Events in quadrant D3,465,658366,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142392
B0147102
C0144652
D0146672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6726791.174547%
B6726921.367826%
C67261352.007136%
D6726610.906928%

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 7746 6726 2 2 0.03% 0.03%
B 7746 6726 7 7 0.09% 0.10%
C 7746 6726 22 22 0.28% 0.33%
D 7746 6726 11 11 0.14% 0.16%

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 53319 303.43 851 832 173.0
A 0 226 7316 37.48 851 832 173.0
A 3 137 6423 32.32 851 832 173.0
B 4 216 57678 348.49 848 826 163.1
B 0 189 32272 192.76 848 826 163.1
B 10 247 30070 179.26 848 826 163.1
C 14 238 127234 654.77 820 826 193.1
C 9 54 107820 554.21 820 826 193.1
C 3 233 13266 64.44 820 826 193.1
D 13 168 123778 600.47 837 813 204.8
D 1 52 56604 272.44 837 813 204.8
D 7 96 46924 225.17 837 813 204.8

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