ASTROSAT CZTI

Data Quality Report

Orbit 33704

Creation date: 2024-06-27T20:51:43.418247
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/AS1T04_090T01_9000004812_33704cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33704cztM0_level2_quad_clean.evt
Size (bytes)589,942,08078,019,200
Size562.6 MB 74.4 MB
Events in quadrant A4,072,133493,359
Events in quadrant B4,234,112484,861
Events in quadrant C3,117,330502,082
Events in quadrant D6,041,126467,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160113
B0164512
C0129342
D0220862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59342854.802831%
B59344838.139535%
C5934540.910010%
D59345439.150657%

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 7247 5934 261 261 3.60% 4.40%
B 7247 5935 373 373 5.15% 6.28%
C 7247 5935 46 46 0.63% 0.78%
D 7247 5935 405 405 5.59% 6.82%

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 15 169 747675 5551.27 675 661 134.6
A 15 237 704252 5228.58 675 661 134.6
A 13 254 11088 77.49 675 661 134.6
B 5 172 1490641 11837.3 657 642 125.9
B 15 85 87578 690.66 657 642 125.9
B 5 255 27359 212.25 657 642 125.9
C 15 214 273956 1805.97 659 665 151.3
C 0 10 176937 1164.84 659 665 151.3
C 3 233 42180 274.34 659 665 151.3
D 8 195 1950974 11264.52 636 623 173.1
D 7 80 490225 2827.76 636 623 173.1
D 2 250 292607 1686.39 636 623 173.1

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