ASTROSAT CZTI

Data Quality Report

Orbit 33721

Creation date: 2024-06-27T20:51:48.291753
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/AS1A11_086T01_9000004816_33721cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33721cztM0_level2_quad_clean.evt
Size (bytes)1,319,616,000192,936,960
Size1.2 GB 184.0 MB
Events in quadrant A7,843,6801,200,852
Events in quadrant B9,347,8651,206,718
Events in quadrant C8,820,9221,207,542
Events in quadrant D12,858,8051,109,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336944
B0378713
C0356363
D0496013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16217930.573472%
B162173602.219893%
C16217920.567306%
D162178655.333909%

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 21618 16217 54 54 0.25% 0.33%
B 21619 16217 237 237 1.10% 1.46%
C 21619 16218 87 87 0.40% 0.54%
D 21619 16219 781 781 3.61% 4.82%

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 15 237 248029 645.86 1914 1877 381.1
A 15 169 141989 367.63 1914 1877 381.1
A 13 6 41440 103.81 1914 1877 381.1
B 5 172 1078861 2970.76 1897 1846 362.5
B 4 170 140618 382.78 1897 1846 362.5
B 0 213 103786 281.18 1897 1846 362.5
C 15 214 746773 1740.26 1865 1879 428.0
C 0 10 391559 910.39 1865 1879 428.0
C 14 67 153613 354.49 1865 1879 428.0
D 8 195 2111132 4415.41 1816 1777 477.7
D 2 250 2052523 4292.72 1816 1777 477.7
D 2 120 298405 620.92 1816 1777 477.7

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