ASTROSAT CZTI

Data Quality Report

Orbit 16279

Creation date: 2024-06-27T17:20:17.296612
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/AS1A05_072T05_9000002394_16279cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16279cztM0_level2_quad_clean.evt
Size (bytes)488,543,04086,808,960
Size465.9 MB 82.8 MB
Events in quadrant A3,751,387534,652
Events in quadrant B3,592,658551,739
Events in quadrant C3,407,427537,686
Events in quadrant D3,572,841521,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155473
B0150522
C0143762
D0153572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6943550.792165%
B6943751.080225%
C6943721.037016%
D69431201.728359%

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 8959 6946 15 15 0.17% 0.22%
B 8959 6946 1 1 0.01% 0.01%
C 8959 6946 3 3 0.03% 0.04%
D 8959 6946 72 72 0.80% 1.04%

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 15 174 478749 2788.6 847 829 171.4
A 13 248 12176 66.21 847 829 171.4
A 0 226 7375 38.2 847 829 171.4
B 0 189 87545 527.94 858 833 164.2
B 15 35 69133 415.84 858 833 164.2
B 4 216 51417 307.97 858 833 164.2
C 14 238 127358 659.62 822 829 191.8
C 3 233 39026 199.13 822 829 191.8
C 0 207 36785 187.44 822 829 191.8
D 10 70 235994 1167.33 824 800 201.5
D 1 52 134872 665.44 824 800 201.5
D 15 0 74029 363.46 824 800 201.5

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