ASTROSAT CZTI

Data Quality Report

Orbit 00303

Creation date: 2024-06-27T13:58:56.551561
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/AS1P01_126T04_9000000036_00303cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00303cztM0_level2_quad_clean.evt
Size (bytes)891,288,00064,915,200
Size850.0 MB 61.9 MB
Events in quadrant A7,103,336394,045
Events in quadrant B6,929,616402,038
Events in quadrant C6,333,591390,134
Events in quadrant D6,250,980384,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250953
B0246252
C0228562
D0226062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564460.106308%
B564430.053154%
C564430.053154%
D564430.053154%

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 7349 5645 206 206 2.80% 3.65%
B 7349 5645 113 113 1.54% 2.00%
C 7349 5645 59 59 0.80% 1.05%
D 7349 5645 67 67 0.91% 1.19%

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 15 127 83052 203.64 1801 1790 399.1
A 0 6 42681 102.47 1801 1790 399.1
A 11 242 8244 16.17 1801 1790 399.1
B 0 183 101981 239.79 1769 1778 417.9
B 0 85 32748 74.11 1769 1778 417.9
B 5 46 12302 25.18 1769 1778 417.9
C 2 192 57067 126.72 1576 1632 437.4
C 1 1 27645 59.47 1576 1632 437.4
C 9 68 17850 37.07 1576 1632 437.4
D 13 216 135237 273.41 1557 1624 488.7
D 7 85 33291 64.8 1557 1624 488.7
D 10 167 26065 50.01 1557 1624 488.7

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