ASTROSAT CZTI

Data Quality Report

Orbit 27137

Creation date: 2024-06-27T19:36:53.676897
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/AS1T03_244T01_9000003912_27137cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27137cztM0_level2_quad_clean.evt
Size (bytes)452,185,92099,132,480
Size431.2 MB 94.5 MB
Events in quadrant A2,937,171668,086
Events in quadrant B2,953,562676,027
Events in quadrant C2,910,476634,296
Events in quadrant D4,500,947619,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124750
B0124120
C0123050
D0173110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5777510.882811%
B5777480.830881%
C5776811.402355%
D57772193.790895%

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 6887 5778 2 2 0.03% 0.03%
B 6887 5778 0 0 0.00% 0.00%
C 6886 5777 3 3 0.04% 0.05%
D 6887 5778 169 169 2.45% 2.92%

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 14 235 81248 545.77 734 720 147.5
A 12 189 10246 64.56 734 720 147.5
A 13 254 9083 56.68 734 720 147.5
B 3 112 76114 548.71 725 706 137.4
B 10 245 20055 140.79 725 706 137.4
B 12 111 16245 113.07 725 706 137.4
C 14 238 111830 680.69 698 702 163.3
C 15 208 71348 432.73 698 702 163.3
C 4 224 5326 28.32 698 702 163.3
D 1 52 1210310 6801.31 699 685 177.9
D 2 250 314307 1763.39 699 685 177.9
D 7 38 264730 1484.63 699 685 177.9

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