ASTROSAT CZTI

Data Quality Report

Orbit 15396

Creation date: 2024-06-27T17:07:56.713507
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/AS1C03_001T01_9000002270_15396cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15396cztM0_level2_quad_clean.evt
Size (bytes)791,568,00093,787,200
Size754.9 MB 89.4 MB
Events in quadrant A3,301,819655,680
Events in quadrant B4,516,179641,234
Events in quadrant C3,309,765645,635
Events in quadrant D12,401,214438,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141133
B0176152
C0137432
D0413982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565981.492765%
B65653946.001523%
C6565520.792079%
D6565339651.728865%

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 7601 6566 16 16 0.21% 0.24%
B 7601 6566 234 234 3.08% 3.56%
C 7601 6566 1 1 0.01% 0.02%
D 7601 6566 3230 3230 42.49% 49.19%

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 12 96 151915 931.7 800 784 162.2
A 9 143 59450 361.67 800 784 162.2
A 7 16 8835 49.63 800 784 162.2
B 10 245 648352 4455.71 779 761 145.3
B 10 16 318090 2183.36 779 761 145.3
B 8 3 143861 984.59 779 761 145.3
C 3 233 282308 1603.68 764 767 175.6
C 7 247 42797 239.41 764 767 175.6
C 13 61 5557 27.28 764 767 175.6
D 13 122 8408923 55133.95 627 609 152.5
D 1 52 685431 4490.43 627 609 152.5
D 2 33 368269 2410.77 627 609 152.5

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