ASTROSAT CZTI

Data Quality Report

Orbit 11304

Creation date: 2024-06-27T16:11:01.761358
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/AS1A04_144T01_9000001652_11304cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11304cztM0_level2_quad_clean.evt
Size (bytes)543,124,800104,328,000
Size518.0 MB 99.5 MB
Events in quadrant A3,776,366692,990
Events in quadrant B4,618,767703,554
Events in quadrant C3,017,554712,649
Events in quadrant D4,619,664621,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152713
B0177992
C0130152
D0178032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61331282.087070%
B613361710.060329%
C6133420.684820%
D61335549.033100%

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 7443 6134 37 37 0.50% 0.60%
B 7443 6134 288 288 3.87% 4.70%
C 7443 6134 0 0 0.00% 0.00%
D 7443 6134 434 434 5.83% 7.08%

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 8 5 698840 4449.62 771 758 156.9
A 0 8 45262 283.67 771 758 156.9
A 1 162 17281 105.32 771 758 156.9
B 4 239 1372464 9557.84 760 744 143.5
B 3 189 96588 667.82 760 744 143.5
B 3 64 89800 620.52 760 744 143.5
C 13 61 5689 27.59 773 779 177.9
C 14 234 3000 12.48 773 779 177.9
C 12 4 2323 8.68 773 779 177.9
D 10 253 1269610 7413.91 717 699 171.2
D 7 80 144962 842.89 717 699 171.2
D 2 120 113891 661.35 717 699 171.2

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