ASTROSAT CZTI

Data Quality Report

Orbit 14227

Creation date: 2024-06-27T16:52:10.737428
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/AS1G08_084T01_9000002100_14227cztM0_level2.evt modeM0/AS1G08_084T01_9000002100_14227cztM0_level2_quad_clean.evt
Size (bytes)524,632,320103,639,680
Size500.3 MB 98.8 MB
Events in quadrant A3,303,990688,681
Events in quadrant B3,506,636698,337
Events in quadrant C3,522,629673,892
Events in quadrant D5,128,509638,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136523
B0142832
C0142972
D0195032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295671.064337%
B6295881.397935%
C6295620.984909%
D62953836.084194%

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 7556 6297 6 6 0.08% 0.10%
B 7556 6297 8 8 0.11% 0.13%
C 7556 6297 2 2 0.03% 0.03%
D 7556 6297 241 241 3.19% 3.83%

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 12 189 40796 242.49 830 814 164.9
A 9 143 27676 162.92 830 814 164.9
A 8 15 22024 128.64 830 814 164.9
B 0 229 119686 776.83 825 806 153.0
B 4 97 41896 268.51 825 806 153.0
B 4 48 39803 254.83 825 806 153.0
C 3 233 342212 1847.87 812 818 184.7
C 14 234 8769 43.04 812 818 184.7
C 13 61 5716 26.51 812 818 184.7
D 12 110 804828 4347.18 798 780 185.0
D 5 222 506524 2734.37 798 780 185.0
D 10 199 266791 1438.22 798 780 185.0

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