ASTROSAT CZTI

Data Quality Report

Orbit 13485

Creation date: 2024-06-27T16:41:30.909738
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_103T01_9000001988_13485cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13485cztM0_level2_quad_clean.evt
Size (bytes)432,184,32086,192,640
Size412.2 MB 82.2 MB
Events in quadrant A3,097,333541,465
Events in quadrant B3,277,305552,396
Events in quadrant C3,152,635541,574
Events in quadrant D3,115,645517,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134393
B0137282
C0135582
D0137202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552550.839438%
B6552751.144689%
C6552570.869963%
D6552640.976801%

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 7548 6553 0 0 0.00% 0.00%
B 7548 6553 5 5 0.07% 0.08%
C 7548 6553 0 0 0.00% 0.00%
D 7548 6553 15 15 0.20% 0.23%

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 17383 101.84 798 781 163.0
A 0 226 7025 38.3 798 781 163.0
A 12 194 5951 31.71 798 781 163.0
B 4 173 82773 539.82 797 776 151.9
B 0 214 27529 176.12 797 776 151.9
B 0 230 25831 164.95 797 776 151.9
C 3 233 61991 334.38 787 792 183.0
C 0 207 15474 80.22 787 792 183.0
C 14 220 6174 29.41 787 792 183.0
D 8 195 77968 412.17 778 756 187.3
D 13 249 71959 380.09 778 756 187.3
D 2 234 21742 112.03 778 756 187.3

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