ASTROSAT CZTI

Data Quality Report

Orbit 20160713_G05_256T01_9000000538_level2

Creation date: 2025-11-03T16:08:32.171678
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_256T01_9000000538cztM0_level2.fits modeM0/AS1G05_256T01_9000000538cztM0_level2_quad_clean.evt
Size (bytes)474,287,040662,169,600
Size452.3 MB 631.5 MB
Events in quadrant A2,866,8844,486,707
Events in quadrant B2,762,9284,450,106
Events in quadrant C2,531,3743,460,334
Events in quadrant D2,355,2043,819,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011900
B011920
C011920
D011920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01337050
B01324770
C01875770
D01773580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574720263.634276%
B5575815752.824707%
C557511095119.642697%
D55751583610.467974%

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 62516 55794 0 0 0.00% 0.00%
B 62516 55801 0 0 0.00% 0.00%
C 62515 55793 0 0 0.00% 0.00%
D 62516 55765 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 0 29 2930 11.62 744 696 192.2
A 14 188 2896 11.45 744 696 192.2
A 14 204 2456 9.16 744 696 192.2
B 2 9 2364 11.42 729 695 146.1
B 14 254 2035 9.17 729 695 146.1
B 12 226 2035 9.17 729 695 146.1
C 1 81 1864 6.99 670 622 177.7
C 1 80 1850 6.91 670 622 177.7
C 2 191 1747 6.33 670 622 177.7
D 11 82 2076 7.96 672 608 184.3
D 7 5 1803 6.48 672 608 184.3
D 3 14 1732 6.1 672 608 184.3

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