ASTROSAT CZTI

Data Quality Report

Orbit 20170323_G05_246T02_9000001106_level2

Creation date: 2025-11-10T06:58:20.605820
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_246T02_9000001106cztM0_level2.fits modeM0/AS1G05_246T02_9000001106cztM0_level2_quad_clean.evt
Size (bytes)568,676,160584,066,880
Size542.3 MB 557.0 MB
Events in quadrant A3,413,6663,512,568
Events in quadrant B3,311,2683,549,240
Events in quadrant C3,394,9503,357,631
Events in quadrant D2,859,5123,028,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01357180
B01353910
C01297430
D01492740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012520
B012520
C012520
D012520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183513322.154120%
B6183515232.463006%
C6183510321.668958%
D6183527844.502305%

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 82254 61837 0 0 0.00% 0.00%
B 82254 61835 0 0 0.00% 0.00%
C 82254 61834 0 0 0.00% 0.00%
D 82254 61822 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 14 188 3338 11.08 885 825 226.7
A 0 29 3299 10.91 885 825 226.7
A 7 110 2912 9.21 885 825 226.7
B 2 9 2900 11.78 874 831 175.7
B 3 17 2267 8.17 874 831 175.7
B 12 226 2256 8.11 874 831 175.7
C 1 81 2479 6.94 895 824 238.5
C 1 80 2473 6.91 895 824 238.5
C 12 241 2418 6.68 895 824 238.5
D 6 231 2121 6.23 816 738 221.8
D 1 19 2014 5.75 816 738 221.8
D 3 159 2004 5.71 816 738 221.8

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