ASTROSAT CZTI

Data Quality Report

Orbit 03016

Creation date: 2024-06-27T14:23:31.124970
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_238T02_9000000420_03016cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03016cztM0_level2_quad_clean.evt
Size (bytes)594,973,44086,616,000
Size567.4 MB 82.6 MB
Events in quadrant A3,863,687510,054
Events in quadrant B4,154,504505,508
Events in quadrant C4,429,530508,684
Events in quadrant D4,984,740498,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178873
B0188012
C0198062
D0216072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8642220.254571%
B8642560.647998%
C8642220.254571%
D86421721.990280%

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 12894 8644 22 22 0.17% 0.25%
B 12894 8644 50 50 0.39% 0.58%
C 12894 8644 20 20 0.16% 0.23%
D 12894 8644 249 249 1.93% 2.88%

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 50 222351 1253.68 879 862 176.7
A 14 249 197663 1113.94 879 862 176.7
A 13 251 21363 116.04 879 862 176.7
B 14 167 387679 2229.42 901 879 173.5
B 6 203 125927 720.75 901 879 173.5
B 2 249 58300 330.96 901 879 173.5
C 0 219 736462 3625.69 867 873 202.9
C 1 192 178458 875.31 867 873 202.9
C 6 80 84270 411.06 867 873 202.9
D 13 114 1386502 6020.73 848 829 230.2
D 2 152 80842 347.66 848 829 230.2
D 13 239 55362 236.94 848 829 230.2

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