ASTROSAT CZTI

Data Quality Report

Orbit 03471

Creation date: 2024-06-27T14:29:49.656410
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/AS1G05_245T01_9000000460_03471cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03471cztM0_level2_quad_clean.evt
Size (bytes)487,200,96063,138,240
Size464.6 MB 60.2 MB
Events in quadrant A3,557,725367,361
Events in quadrant B4,361,341367,161
Events in quadrant C3,310,134367,123
Events in quadrant D3,083,579355,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147143
B0174832
C0140532
D0136382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65051702.613374%
B65051442.213682%
C65051392.136818%
D6505871.337433%

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 7650 6505 46 46 0.60% 0.71%
B 7650 6505 21 21 0.27% 0.32%
C 7650 6505 47 47 0.61% 0.72%
D 7650 6505 9 9 0.12% 0.14%

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 14 111 263130 1598.01 811 795 164.2
A 0 118 101641 614.3 811 795 164.2
A 8 15 41497 247.94 811 795 164.2
B 15 204 940837 6001.44 820 805 156.6
B 14 167 98865 626.04 820 805 156.6
B 2 249 69252 436.99 820 805 156.6
C 1 192 218825 1191.87 786 792 182.9
C 15 208 7601 37.22 786 792 182.9
C 13 61 6801 32.85 786 792 182.9
D 8 195 33760 176.39 785 765 187.1
D 13 223 29166 151.83 785 765 187.1
D 13 46 18430 94.44 785 765 187.1

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