ASTROSAT CZTI

Data Quality Report

Orbit 30771

Creation date: 2024-06-27T20:19:25.605640
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/AS1A10_071T12_9000004446_30771cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30771cztM0_level2_quad_clean.evt
Size (bytes)580,268,16084,453,120
Size553.4 MB 80.5 MB
Events in quadrant A3,412,542543,729
Events in quadrant B5,102,995550,147
Events in quadrant C3,373,076520,042
Events in quadrant D5,248,573493,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140452
B0196162
C0138562
D0201262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456661.022305%
B6456640.991326%
C6455761.177382%
D64553004.647560%

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 7591 6456 24 24 0.32% 0.37%
B 7591 6456 4 4 0.05% 0.06%
C 7590 6455 8 8 0.11% 0.12%
D 7590 6456 260 260 3.43% 4.03%

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 0 13 242080 1462.38 822 806 165.0
A 13 254 11909 67.3 822 806 165.0
A 3 137 8140 44.45 822 806 165.0
B 6 159 1842350 11879.62 818 798 155.0
B 12 111 19239 118.96 818 798 155.0
B 11 111 17486 107.65 818 798 155.0
C 14 238 126264 685.92 784 790 182.9
C 3 233 89011 482.27 784 790 182.9
C 0 10 80220 434.21 784 790 182.9
D 8 195 1422631 7099.25 773 760 200.3
D 12 227 544005 2712.36 773 760 200.3
D 13 249 179314 891.5 773 760 200.3

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