ASTROSAT CZTI

Data Quality Report

Orbit 46300

Creation date: 2024-06-27T23:21:26.987943
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/AS1A13_072T02_9000006194_46300cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46300cztM0_level2_quad_clean.evt
Size (bytes)578,136,960125,530,560
Size551.4 MB 119.7 MB
Events in quadrant A6,764,015841,442
Events in quadrant B5,636,736870,500
Events in quadrant C3,578,296838,260
Events in quadrant D4,853,650741,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246322
B0219212
C0154632
D0194212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73294115.607859%
B73304185.702592%
C73301872.551160%
D73304996.807640%

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 9519 7331 3 3 0.03% 0.04%
B 9520 7332 51 51 0.54% 0.70%
C 9520 7332 1 1 0.01% 0.01%
D 9520 7332 265 265 2.78% 3.61%

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 10 83 3167293 16719.14 908 888 189.4
A 15 223 62536 325.51 908 888 189.4
A 13 254 12805 62.92 908 888 189.4
B 4 171 1074593 6010.09 895 868 178.7
B 3 112 956263 5347.75 895 868 178.7
B 5 255 53879 296.72 895 868 178.7
C 12 2 41746 193.39 898 902 211.2
C 12 249 19249 86.87 898 902 211.2
C 14 67 7577 31.61 898 902 211.2
D 1 52 877013 3920.78 882 855 223.5
D 13 249 484712 2165.24 882 855 223.5
D 5 171 90849 402.72 882 855 223.5

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