ASTROSAT CZTI

Data Quality Report

Orbit 03874

Creation date: 2024-06-27T14:34:38.944028
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_083T01_9000000494_03874cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03874cztM0_level2_quad_clean.evt
Size (bytes)556,718,40089,516,160
Size530.9 MB 85.4 MB
Events in quadrant A3,477,512580,582
Events in quadrant B3,647,501577,138
Events in quadrant C5,640,909531,565
Events in quadrant D3,643,410557,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152113
B0157332
C0215672
D0159252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6646991.489618%
B6646751.128498%
C664682812.458622%
D66461702.557930%

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 7681 6647 59 59 0.77% 0.89%
B 7681 6647 33 33 0.43% 0.50%
C 7681 6647 774 774 10.08% 11.64%
D 7681 6647 145 145 1.89% 2.18%

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 0 118 502633 3370.77 724 707 148.9
A 13 251 113710 758.89 724 707 148.9
A 0 226 52842 350.12 724 707 148.9
B 15 204 323618 2277.19 736 717 141.8
B 4 48 292403 2057.06 736 717 141.8
B 14 167 148695 1043.59 736 717 141.8
C 2 53 2997060 19098.52 672 674 156.9
C 13 61 5692 31.98 672 674 156.9
C 1 16 5009 27.63 672 674 156.9
D 14 34 464894 2714.93 703 681 171.0
D 13 248 283071 1651.55 703 681 171.0
D 13 137 48719 280.95 703 681 171.0

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
Veto Counter