ASTROSAT CZTI

Data Quality Report

Orbit 10426

Creation date: 2024-06-27T15:59:47.373164
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/AS1G07_066T01_9000001510_10426cztM0_level2.evt modeM0/AS1G07_066T01_9000001510_10426cztM0_level2_quad_clean.evt
Size (bytes)552,646,08062,271,360
Size527.0 MB 59.4 MB
Events in quadrant A5,247,247232,155
Events in quadrant B3,625,302405,468
Events in quadrant C3,088,243431,637
Events in quadrant D4,362,709390,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268118
B0268116
C0268120
D0257110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C042
D042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06649848058
B03189716869
C02761713623
D04072623499

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A420864815.399240%
B65301842.817764%
C6786761.119953%
D65771602.432720%

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 7963 4860 345 345 4.33% 7.10%
B 7965 7314 26 26 0.33% 0.36%
C 7965 7528 2 2 0.03% 0.03%
D 7963 7109 28 28 0.35% 0.39%

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 13 251 3354690 34102.13 470 458 98.4
A 3 80 76640 774.53 470 458 98.4
A 0 226 4345 39.52 470 458 98.4
B 4 239 408895 2765.21 765 744 147.6
B 4 81 104848 705.3 765 744 147.6
B 0 214 35757 237.21 765 744 147.6
C 14 234 19434 102.3 782 785 182.3
C 8 128 8511 42.38 782 785 182.3
C 13 61 5817 27.6 782 785 182.3
D 8 195 659847 3666.98 746 728 179.7
D 2 33 462545 2569.3 746 728 179.7
D 1 20 158546 878.01 746 728 179.7

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