ASTROSAT CZTI

Data Quality Report

Orbit 31271

Creation date: 2024-06-27T20:25:52.529164
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/AS1A10_058T08_9000004528_31271cztM0_level2.evt modeM0/AS1A10_058T08_9000004528_31271cztM0_level2_quad_clean.evt
Size (bytes)449,703,36069,094,080
Size428.9 MB 65.9 MB
Events in quadrant A2,591,863441,588
Events in quadrant B4,317,590434,564
Events in quadrant C2,814,571421,852
Events in quadrant D3,529,236416,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111491
B0166503
C0116941
D0141021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392400.741840%
B53911512.800965%
C53911152.133185%
D53911212.244482%

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 5662 5393 0 0 0.00% 0.00%
B 5661 5392 7 7 0.12% 0.13%
C 5661 5392 2 2 0.04% 0.04%
D 5661 5392 69 69 1.22% 1.28%

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 13 254 10274 70.42 671 656 136.6
A 3 137 6844 45.31 671 656 136.6
A 0 226 5592 36.14 671 656 136.6
B 6 159 1515292 11798.4 657 641 128.4
B 10 247 88039 680.79 657 641 128.4
B 0 190 50545 388.73 657 641 128.4
C 3 233 147785 974.51 635 639 151.0
C 14 238 103194 679.19 635 639 151.0
C 0 10 67457 442.52 635 639 151.0
D 8 195 697595 4495.88 644 625 155.0
D 12 233 131599 844.86 644 625 155.0
D 2 250 125689 806.74 644 625 155.0

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