ASTROSAT CZTI

Data Quality Report

Orbit 20160118_G02_051T01_9000000278_level2

Creation date: 2025-10-25T22:24:19.692764
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/AS1G02_051T01_9000000278cztM0_level2.fits modeM0/AS1G02_051T01_9000000278cztM0_level2_quad_clean.evt
Size (bytes)535,694,400541,558,080
Size510.9 MB 516.5 MB
Events in quadrant A3,138,7243,172,578
Events in quadrant B3,091,5663,181,072
Events in quadrant C3,103,8383,042,751
Events in quadrant D2,668,1702,783,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02648760
B02784110
C02575600
D02513180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012500
B012500
C012500
D012500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615465050.820524%
B615466140.997628%
C615453600.584938%
D615449091.476992%

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 71211 61540 0 0 0.00% 0.00%
B 71211 61538 0 0 0.00% 0.00%
C 71211 61540 0 0 0.00% 0.00%
D 71209 61504 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 2801 10.64 814 758 192.0
A 7 110 2719 10.21 814 758 192.0
A 14 79 2280 7.93 814 758 192.0
B 2 9 2539 12.08 815 773 146.2
B 14 254 1980 8.25 815 773 146.2
B 2 8 1977 8.23 815 773 146.2
C 12 241 2089 6.67 818 756 199.8
C 2 191 2019 6.32 818 756 199.8
C 9 242 1989 6.17 818 756 199.8
D 6 231 1940 6.92 762 698 179.6
D 1 19 1937 6.9 762 698 179.6
D 6 44 1887 6.62 762 698 179.6

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