ASTROSAT CZTI

Data Quality Report

Orbit 12387

Creation date: 2024-06-27T16:26:31.602513
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_12387cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12387cztM0_level2_quad_clean.evt
Size (bytes)549,725,760126,002,880
Size524.3 MB 120.2 MB
Events in quadrant A3,691,069852,063
Events in quadrant B5,531,869831,003
Events in quadrant C3,019,419860,027
Events in quadrant D3,954,009808,205

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154743
B0208422
C0137962
D0165272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664630.945378%
B666472210.834334%
C6664200.300120%
D66641342.010804%

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 7820 6666 4 4 0.05% 0.06%
B 7820 6666 680 680 8.70% 10.20%
C 7820 6666 8 8 0.10% 0.12%
D 7820 6666 130 130 1.66% 1.95%

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 175478 1136.42 769 754 153.7
A 13 251 144774 936.72 769 754 153.7
A 15 239 101205 653.34 769 754 153.7
B 2 32 1628063 11640.49 754 737 139.8
B 2 48 450499 3217.21 754 737 139.8
B 4 239 302318 2157.25 754 737 139.8
C 14 234 70515 400.82 756 761 174.0
C 13 61 5611 27.87 756 761 174.0
C 8 222 2208 8.31 756 761 174.0
D 1 52 631268 3560.62 737 715 177.1
D 13 104 229459 1291.68 737 715 177.1
D 10 199 110058 617.44 737 715 177.1

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