ASTROSAT CZTI

Data Quality Report

Orbit 47895

Creation date: 2024-08-06T11:00:29.713699
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/AS1A13_053T01_9000006370_47895cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47895cztM0_level2_quad_clean.evt
Size (bytes)489,038,400111,985,920
Size466.4 MB 106.8 MB
Events in quadrant A6,680,898728,458
Events in quadrant B3,068,749783,634
Events in quadrant C2,979,579760,023
Events in quadrant D4,863,870660,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241672
B0136452
C0134782
D0192042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65692483.775308%
B6569450.685036%
C6569260.395798%
D65694256.469782%

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 7764 6569 85 85 1.09% 1.29%
B 7764 6569 3 3 0.04% 0.05%
C 7764 6569 1 1 0.01% 0.02%
D 7764 6569 354 354 4.56% 5.39%

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 10 83 3847514 25603.0 729 715 150.2
A 7 3 18286 116.95 729 715 150.2
A 3 137 8270 50.28 729 715 150.2
B 5 255 95146 655.15 746 720 144.1
B 12 111 18071 120.38 746 720 144.1
B 11 111 16639 110.45 746 720 144.1
C 0 207 30879 172.96 751 755 174.2
C 6 247 5623 27.95 751 755 174.2
C 14 254 5476 27.11 751 755 174.2
D 12 2 802556 4432.13 723 701 180.9
D 2 37 681931 3765.39 723 701 180.9
D 2 249 157712 867.85 723 701 180.9

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