ASTROSAT CZTI

Data Quality Report

Orbit 00733

Creation date: 2024-06-27T14:02:12.709588
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_010T01_9000000108_00733cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00733cztM0_level2_quad_clean.evt
Size (bytes)1,127,977,92082,748,160
Size1.1 GB 78.9 MB
Events in quadrant A7,167,763548,931
Events in quadrant B9,003,586511,787
Events in quadrant C6,838,030534,126
Events in quadrant D10,743,365479,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256711
B0312091
C0247091
D0364395

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171170.275482%
B61715869.496030%
C6172110.178224%
D6171109417.728083%

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 7146 6172 156 156 2.18% 2.53%
B 7146 6172 889 889 12.44% 14.40%
C 7147 6173 114 114 1.60% 1.85%
D 7146 6172 2030 2030 28.41% 32.89%

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 34 36921 78.15 1856 1865 448.6
A 11 79 8710 15.26 1856 1865 448.6
A 3 111 5390 7.86 1856 1865 448.6
B 8 38 1556044 3517.05 1865 1874 441.9
B 7 221 295861 665.28 1865 1874 441.9
B 5 191 31626 67.33 1865 1874 441.9
C 15 241 37421 74.67 1719 1780 477.3
C 3 111 30225 59.59 1719 1780 477.3
C 9 52 26521 51.83 1719 1780 477.3
D 13 25 2249114 4602.26 1582 1633 488.3
D 9 52 1372316 2806.8 1582 1633 488.3
D 12 233 382734 780.4 1582 1633 488.3

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