ASTROSAT CZTI

Data Quality Report

Orbit 12173

Creation date: 2024-06-27T16:23:22.862503
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/AS1G08_065T01_9000001796_12173cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12173cztM0_level2_quad_clean.evt
Size (bytes)556,191,36073,978,560
Size530.4 MB 70.6 MB
Events in quadrant A3,606,954474,080
Events in quadrant B5,405,009410,186
Events in quadrant C3,572,727459,738
Events in quadrant D3,828,109451,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148683
B0205172
C0146092
D0154432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63631292.027346%
B636374311.676882%
C63631071.681597%
D63631412.215936%

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 7694 6365 6 6 0.08% 0.09%
B 7694 6365 457 457 5.94% 7.18%
C 7694 6365 48 48 0.62% 0.75%
D 7694 6365 47 47 0.61% 0.74%

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 1 162 105358 621.59 847 833 168.2
A 1 178 50500 295.36 847 833 168.2
A 5 16 45454 265.35 847 833 168.2
B 4 239 990696 6750.1 790 774 146.7
B 10 245 920001 6268.05 790 774 146.7
B 11 51 152162 1032.29 790 774 146.7
C 15 208 350691 1880.77 817 821 186.0
C 3 233 24078 125.02 817 821 186.0
C 13 61 6131 28.54 817 821 186.0
D 8 195 151361 773.01 821 798 194.8
D 13 104 144973 740.21 821 798 194.8
D 1 52 102467 521.98 821 798 194.8

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