ASTROSAT CZTI

Data Quality Report

Orbit 19381

Creation date: 2024-06-27T18:02:10.524288
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_025T17_9000002868_19381cztM0_level2.evt modeM0/AS1A05_025T17_9000002868_19381cztM0_level2_quad_clean.evt
Size (bytes)746,622,720115,355,520
Size712.0 MB 110.0 MB
Events in quadrant A2,971,751895,667
Events in quadrant B3,091,138904,572
Events in quadrant C2,921,925850,349
Events in quadrant D13,239,578441,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123321
B0127021
C0122191
D0431643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5705971.700263%
B57061051.840168%
C57061152.015422%
D5705519691.078002%

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 7040 5705 3 3 0.04% 0.05%
B 7041 5706 4 4 0.06% 0.07%
C 7041 5706 0 0 0.00% 0.00%
D 7039 5704 4837 4837 68.72% 84.80%

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 5 16 12529 77.62 765 753 151.7
A 15 174 8419 50.53 765 753 151.7
A 12 96 6782 39.74 765 753 151.7
B 0 197 42724 302.26 757 742 138.9
B 0 190 22525 156.83 757 742 138.9
B 4 216 20791 144.35 757 742 138.9
C 14 238 116208 706.78 717 721 163.4
C 3 233 6303 34.16 717 721 163.4
C 13 61 5235 27.62 717 721 163.4
D 10 66 9499926 91096.82 437 426 104.3
D 7 238 1914530 18355.58 437 426 104.3
D 1 52 61009 580.97 437 426 104.3

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