ASTROSAT CZTI

Data Quality Report

Orbit 15160

Creation date: 2024-06-27T17:04:36.058293
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/AS1A04_218T08_9000002236_15160cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15160cztM0_level2_quad_clean.evt
Size (bytes)539,225,28092,678,400
Size514.2 MB 88.4 MB
Events in quadrant A3,954,817563,591
Events in quadrant B3,802,394571,495
Events in quadrant C4,291,572574,606
Events in quadrant D3,753,289555,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165793
B0163782
C0174602
D0167322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77862523.236578%
B77862643.390701%
C77862212.838428%
D77862132.735679%

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 8012 7787 1 1 0.01% 0.01%
B 8012 7787 10 10 0.12% 0.13%
C 8012 7787 22 22 0.27% 0.28%
D 8012 7787 16 16 0.20% 0.21%

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 15 239 347188 1818.64 932 911 190.4
A 13 248 11510 55.67 932 911 190.4
A 12 189 9291 44.01 932 911 190.4
B 3 64 76406 420.03 933 907 179.7
B 0 229 24277 130.02 933 907 179.7
B 12 111 21918 116.89 933 907 179.7
C 3 233 580195 2722.12 922 927 212.8
C 14 234 91375 425.04 922 927 212.8
C 3 9 17214 76.54 922 927 212.8
D 2 16 133363 591.31 923 892 224.0
D 2 33 50682 222.25 923 892 224.0
D 7 38 42041 183.68 923 892 224.0

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