ASTROSAT CZTI

Data Quality Report

Orbit 18188

Creation date: 2024-06-27T17:46:27.697661
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/AS1A05_160T02_9000002710_18188cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18188cztM0_level2_quad_clean.evt
Size (bytes)431,112,96089,363,520
Size411.1 MB 85.2 MB
Events in quadrant A2,803,165584,925
Events in quadrant B2,911,169597,372
Events in quadrant C3,364,802550,969
Events in quadrant D3,555,572541,214

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017040
B017028
C017038
D017042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043
B042
C041
D041

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171494399
B0174244495
C0211587093
D0216086814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6266100.159591%
B6292150.238398%
C60171672.775470%
D5948691.160054%

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 8782 7367 0 0 0.00% 0.00%
B 8783 7351 0 0 0.00% 0.00%
C 8781 7127 60 60 0.68% 0.84%
D 8782 7075 46 46 0.52% 0.65%

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 15 174 35459 238.62 714 698 145.7
A 4 2 17391 114.59 714 698 145.7
A 0 226 6151 37.43 714 698 145.7
B 3 64 22673 155.96 722 703 140.9
B 0 189 21329 146.42 722 703 140.9
B 0 229 17874 121.89 722 703 140.9
C 4 254 697866 4504.63 654 659 154.8
C 14 238 100703 646.38 654 659 154.8
C 8 128 7478 44.06 654 659 154.8
D 7 238 512268 3150.05 656 636 162.4
D 5 222 139499 854.96 656 636 162.4
D 10 70 128368 786.43 656 636 162.4

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