ASTROSAT CZTI

Data Quality Report

Orbit 19018

Creation date: 2024-06-27T17:58:07.888315
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/AS1A06_003T05_9000002830_19018cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19018cztM0_level2_quad_clean.evt
Size (bytes)522,521,28089,616,960
Size498.3 MB 85.5 MB
Events in quadrant A4,172,445583,940
Events in quadrant B3,633,283600,676
Events in quadrant C3,673,662558,874
Events in quadrant D3,920,306533,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162581
B0146933
C0149331
D0158431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62703866.156300%
B6269831.323975%
C62691171.866326%
D62691272.025841%

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 7575 6271 277 277 3.66% 4.42%
B 7574 6270 25 25 0.33% 0.40%
C 7574 6270 67 67 0.88% 1.07%
D 7574 6270 78 78 1.03% 1.24%

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 14 235 1138454 7236.54 785 771 157.2
A 8 192 11544 68.52 785 771 157.2
A 0 226 6834 38.57 785 771 157.2
B 3 112 192374 1262.94 809 790 151.7
B 0 189 103133 674.66 809 790 151.7
B 7 220 58198 378.44 809 790 151.7
C 3 233 553125 3085.51 770 777 179.0
C 14 238 120186 667.04 770 777 179.0
C 13 61 5437 26.03 770 777 179.0
D 7 238 769985 4112.15 766 744 187.1
D 1 52 223526 1190.93 766 744 187.1
D 2 234 25433 131.98 766 744 187.1

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