ASTROSAT CZTI

Data Quality Report

Orbit 35165

Creation date: 2022-03-31T03:50:48.516436
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/AS1C07_004T01_9000005042_35165cztM0_level2.evt modeM0/AS1C07_004T01_9000005042_35165cztM0_level2_quad_clean.evt
Size (bytes)647,997,12069,603,840
Size618.0 MB 66.4 MB
Events in quadrant A2,757,551458,684
Events in quadrant B6,895,621396,181
Events in quadrant C3,069,580456,460
Events in quadrant D6,520,353400,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117553
B0243532
C0125282
D0234212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565380.141518%
B5653139524.677163%
C5653721.273660%
D565363711.268353%

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 7056 5654 3 3 0.04% 0.05%
B 7056 5654 936 936 13.27% 16.55%
C 7056 5654 66 66 0.94% 1.17%
D 7056 5654 490 490 6.94% 8.67%

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 96908 716.86 664 651 134.3
A 9 143 47719 350.53 664 651 134.3
A 15 169 19008 136.71 664 651 134.3
B 5 236 3126311 27088.42 597 582 115.4
B 5 172 728878 6311.61 597 582 115.4
B 0 182 510731 4421.09 597 582 115.4
C 0 10 276490 1843.41 642 646 149.6
C 15 214 236173 1573.98 642 646 149.6
C 0 207 26682 173.99 642 646 149.6
D 8 195 1455752 9596.59 617 600 151.6
D 7 80 1253295 8261.41 617 600 151.6
D 10 118 427263 2813.8 617 600 151.6

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