ASTROSAT CZTI

Data Quality Report

Orbit 33776

Creation date: 2024-06-27T20:52:33.306743
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/AS1A11_086T01_9000004820_33776cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33776cztM0_level2_quad_clean.evt
Size (bytes)507,346,56070,511,040
Size483.8 MB 67.2 MB
Events in quadrant A4,151,182423,861
Events in quadrant B3,872,848438,255
Events in quadrant C3,026,195450,928
Events in quadrant D3,928,271423,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279
B02610
C02711
D0279

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01235
B012311
C012412
D01248

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176211412
B0166351284
C013446846
D0168391224

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56943856.761503%
B56893205.624890%
C5732270.471040%
D5681931.637036%

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 7266 5878 259 259 3.56% 4.41%
B 7266 5879 215 215 2.96% 3.66%
C 7266 5911 20 20 0.28% 0.34%
D 7266 5883 65 65 0.89% 1.10%

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 15 237 1230687 9632.11 634 622 127.7
A 15 169 437958 3424.59 634 622 127.7
A 13 6 16047 120.79 634 622 127.7
B 5 172 895116 7207.71 639 621 124.1
B 0 190 87033 696.3 639 621 124.1
B 4 171 83507 667.88 639 621 124.1
C 15 214 248640 1676.63 641 647 147.9
C 9 187 76737 514.43 641 647 147.9
C 14 254 70153 469.92 641 647 147.9
D 8 195 883622 5702.57 633 616 154.8
D 2 250 144726 930.68 633 616 154.8
D 1 47 118659 762.34 633 616 154.8

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