ASTROSAT CZTI

Data Quality Report

Orbit 12389

Creation date: 2024-06-27T16:26:33.796890
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_104T02_9000001838_12389cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12389cztM0_level2_quad_clean.evt
Size (bytes)647,706,240122,074,560
Size617.7 MB 116.4 MB
Events in quadrant A3,911,196854,636
Events in quadrant B8,035,263762,182
Events in quadrant C2,860,138850,699
Events in quadrant D4,380,757787,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159092
B0280451
C0128901
D0174171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338580.915115%
B6338194430.672136%
C6338130.205112%
D63383205.048911%

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 7674 6340 8 8 0.10% 0.13%
B 7673 6339 1899 1899 24.75% 29.96%
C 7674 6339 2 2 0.03% 0.03%
D 7674 6340 221 221 2.88% 3.49%

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 13 251 320522 2116.06 754 741 151.1
A 1 162 255516 1685.9 754 741 151.1
A 1 178 135196 889.72 754 741 151.1
B 2 32 2858861 22555.19 687 672 126.7
B 2 48 1803747 14228.83 687 672 126.7
B 4 239 388993 3064.41 687 672 126.7
C 14 234 26588 155.86 725 730 165.9
C 13 61 5409 28.2 725 730 165.9
C 6 96 3776 18.36 725 730 165.9
D 1 52 1215884 7353.97 701 682 165.2
D 10 199 145365 875.57 701 682 165.2
D 13 104 97952 588.64 701 682 165.2

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