ASTROSAT CZTI

Data Quality Report

Orbit 21709

Creation date: 2024-06-27T18:31:25.637976
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/AS1A07_039T03_9000003214_21709cztM0_level2.evt modeM0/AS1A07_039T03_9000003214_21709cztM0_level2_quad_clean.evt
Size (bytes)689,204,160126,132,480
Size657.3 MB 120.3 MB
Events in quadrant A6,951,201820,119
Events in quadrant B3,271,087897,388
Events in quadrant C6,727,055824,785
Events in quadrant D3,486,999826,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251892
B0139742
C0245182
D0147882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647281312.561805%
B6472310.478986%
C64723795.855995%
D6472721.112485%

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 7632 6473 479 479 6.28% 7.40%
B 7632 6473 2 2 0.03% 0.03%
C 7632 6473 25 25 0.33% 0.39%
D 7632 6473 44 44 0.58% 0.68%

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 15 236 3993383 26195.79 760 744 152.4
A 6 16 25397 161.75 760 744 152.4
A 13 254 11864 72.96 760 744 152.4
B 3 64 62445 414.02 791 773 149.0
B 0 230 40525 266.86 791 773 149.0
B 0 189 28067 183.23 791 773 149.0
C 8 208 3684256 21424.46 745 750 171.9
C 14 238 117457 678.81 745 750 171.9
C 10 23 17553 97.73 745 750 171.9
D 1 52 226072 1238.32 752 732 182.0
D 12 227 88108 480.16 752 732 182.0
D 13 104 86881 473.42 752 732 182.0

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