ASTROSAT CZTI

Data Quality Report

Orbit 25495

Creation date: 2024-06-27T19:18:19.530971
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/AS1A08_003T17_9000003720_25495cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25495cztM0_level2_quad_clean.evt
Size (bytes)598,020,48092,666,880
Size570.3 MB 88.4 MB
Events in quadrant A3,375,712614,966
Events in quadrant B5,899,034543,976
Events in quadrant C3,446,720588,275
Events in quadrant D4,914,017569,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145550
B0219460
C0147500
D0193280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70071161.655487%
B7008104014.840183%
C70081702.425799%
D70082643.767123%

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 7262 7008 0 0 0.00% 0.00%
B 7263 7009 612 612 8.43% 8.73%
C 7263 7009 1 1 0.01% 0.01%
D 7263 7009 89 89 1.23% 1.27%

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 13 254 9742 50.12 874 854 177.3
A 3 137 8117 40.96 874 854 177.3
A 0 226 7495 37.45 874 854 177.3
B 3 64 2686450 17185.06 804 783 156.3
B 0 190 25307 156.92 804 783 156.3
B 0 245 23860 147.67 804 783 156.3
C 14 238 130656 657.79 833 837 197.4
C 2 16 38712 191.91 833 837 197.4
C 0 239 26851 131.81 833 837 197.4
D 1 52 530434 2571.35 842 819 206.0
D 7 238 471824 2286.79 842 819 206.0
D 8 195 355433 1721.7 842 819 206.0

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