ASTROSAT CZTI

Data Quality Report

Orbit 12479

Creation date: 2024-06-27T16:27:59.036490
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_174T01_9000001850_12479cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12479cztM0_level2_quad_clean.evt
Size (bytes)662,788,80068,097,600
Size632.1 MB 64.9 MB
Events in quadrant A4,271,439414,765
Events in quadrant B3,711,038423,322
Events in quadrant C3,071,125421,824
Events in quadrant D8,577,533346,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168772
B0151321
C0134541
D0299581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65131902.917242%
B65371612.462903%
C6537390.596604%
D6537166225.424507%

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 7403 6516 92 92 1.24% 1.41%
B 7403 6539 53 53 0.72% 0.81%
C 7403 6539 8 8 0.11% 0.12%
D 7403 6539 1585 1585 21.41% 24.24%

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 735290 4553.78 790 775 161.3
A 0 23 121712 749.77 790 775 161.3
A 1 162 88923 546.49 790 775 161.3
B 4 239 345804 2219.93 801 781 155.4
B 0 85 165659 1060.85 801 781 155.4
B 0 214 35024 220.32 801 781 155.4
C 7 238 27777 147.77 781 788 182.6
C 13 61 5710 26.95 781 788 182.6
C 3 202 1897 6.07 781 788 182.6
D 1 52 5839347 34512.36 703 685 169.2
D 13 249 26241 151.06 703 685 169.2
D 2 234 21488 122.97 703 685 169.2

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