ASTROSAT CZTI

Data Quality Report

Orbit 12501

Creation date: 2024-06-27T16:28:17.771147
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/AS1A04_174T01_9000001850_12501cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12501cztM0_level2_quad_clean.evt
Size (bytes)521,323,200100,137,600
Size497.2 MB 95.5 MB
Events in quadrant A3,896,593652,157
Events in quadrant B3,765,078661,209
Events in quadrant C3,080,418654,040
Events in quadrant D4,601,620607,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160522
B0155651
C0134791
D0181621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554911.388465%
B65541191.815685%
C6554210.320415%
D65541572.395484%

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 7640 6555 8 8 0.10% 0.12%
B 7640 6556 61 61 0.80% 0.93%
C 7640 6556 0 0 0.00% 0.00%
D 7640 6556 157 157 2.05% 2.39%

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 1 162 237054 1421.67 809 794 166.2
A 1 178 146195 874.94 809 794 166.2
A 1 161 123731 739.76 809 794 166.2
B 4 239 487098 3176.68 807 790 153.1
B 0 230 33891 216.22 807 790 153.1
B 11 51 30863 196.44 807 790 153.1
C 14 234 11752 60.58 785 793 180.9
C 14 67 10555 53.96 785 793 180.9
C 13 61 5803 27.69 785 793 180.9
D 1 52 1376834 7355.61 779 759 187.1
D 7 71 85589 453.45 779 759 187.1
D 13 104 47127 247.85 779 759 187.1

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