ASTROSAT CZTI

Data Quality Report

Orbit 20210601_A10_094T82_9000004428_level2

Creation date: 2021-06-03T14:47:58.914665
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/AS1A10_094T82_9000004428cztM0_level2_bc.evt modeM0/AS1A10_094T82_9000004428cztM0_level2_quad_clean.evt
Size (bytes)279,357,12096,670,080
Size266.4 MB 92.2 MB
Events in quadrant A1,179,091692,213
Events in quadrant B2,196,504674,908
Events in quadrant C1,159,977660,849
Events in quadrant D3,634,918606,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098150
B0130160
C0102780
D0177770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0760
C0720
D0790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4209841.995723%
B41611323.172314%
C42132205.221932%
D412557013.818182%

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 22098 4634 0 0 0.00% 0.00%
B 22098 4589 0 0 0.00% 0.00%
C 22100 4636 0 0 0.00% 0.00%
D 22098 4554 200 200 0.91% 4.39%

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 0 13 75002 1216.68 281 277 61.4
A 8 192 20504 329.34 281 277 61.4
A 13 254 7454 116.86 281 277 61.4
B 6 159 1097532 20797.35 273 269 52.8
B 0 190 21818 408.44 273 269 52.8
B 4 80 6914 125.95 273 269 52.8
C 3 233 61821 963.06 265 265 63.9
C 0 10 43120 670.48 265 265 63.9
C 10 22 9873 150.32 265 265 63.9
D 8 195 1604467 26712.21 260 254 60.1
D 12 227 611930 10185.19 260 254 60.1
D 1 52 156249 2597.52 260 254 60.1

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