ASTROSAT CZTI

Data Quality Report

Orbit 36078

Creation date: 2022-08-10T06:26:17.041967
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_069T01_9000005158_36078cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36078cztM0_level2_quad_clean.evt
Size (bytes)443,088,00084,582,720
Size422.6 MB 80.7 MB
Events in quadrant A2,833,366551,821
Events in quadrant B3,175,068551,328
Events in quadrant C2,917,034541,397
Events in quadrant D4,099,274511,121

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 7207 5835 0 0 0.00% 0.00%
B 7207 5836 49 49 0.68% 0.84%
C 7207 5837 22 22 0.31% 0.38%
D 7207 5826 226 226 3.14% 3.88%

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 10 83 183812 1358.16 669 657 134.9
A 9 143 51197 374.77 669 657 134.9
A 13 6 10641 74.03 669 657 134.9
B 5 172 242230 1868.69 661 642 129.3
B 0 190 94641 727.08 661 642 129.3
B 5 255 73324 562.19 661 642 129.3
C 15 214 245200 1611.01 643 647 151.8
C 0 10 105263 689.16 643 647 151.8
C 15 208 54166 352.56 643 647 151.8
D 12 227 742059 4811.96 638 623 154.1
D 12 6 310074 2008.36 638 623 154.1
D 12 233 225077 1456.72 638 623 154.1

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