ASTROSAT CZTI

Data Quality Report

Orbit 09420

Creation date: 2024-06-27T15:46:07.223113
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/AS1G07_030T01_9000001338_09420cztM0_level2.evt modeM0/AS1G07_030T01_9000001338_09420cztM0_level2_quad_clean.evt
Size (bytes)654,739,20065,292,480
Size624.4 MB 62.3 MB
Events in quadrant A4,291,514398,501
Events in quadrant B3,176,801403,872
Events in quadrant C8,770,962345,313
Events in quadrant D3,158,238384,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01729461
B01353139
C03031747
D01349744

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621151.807608%
B6367570.895241%
C6366244738.438580%
D6363470.738645%

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 7602 6383 22 22 0.29% 0.34%
B 7602 6382 0 0 0.00% 0.00%
C 7602 6383 2019 2019 26.56% 31.63%
D 7602 6382 0 0 0.00% 0.00%

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 8 5 1011277 6128.0 814 799 164.9
A 4 2 81933 492.03 814 799 164.9
A 14 111 23302 136.47 814 799 164.9
B 12 111 17055 105.42 816 798 154.2
B 11 111 13959 85.34 816 798 154.2
B 14 111 10537 63.15 816 798 154.2
C 4 254 6267049 42742.15 636 639 146.6
C 9 68 17742 116.66 636 639 146.6
C 13 61 4724 27.86 636 639 146.6
D 8 195 96242 477.54 786 767 199.9
D 10 172 35420 173.32 786 767 199.9
D 2 234 24246 117.44 786 767 199.9

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