ASTROSAT CZTI

Data Quality Report

Orbit 40142

Creation date: 2024-06-27T22:12:50.703362
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/AS1A12_042T01_9000005522_40142cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40142cztM0_level2_quad_clean.evt
Size (bytes)12,268,8001,013,760
Size11.7 MB 990.0 KB
Events in quadrant A58,7293,998
Events in quadrant B51,0944,935
Events in quadrant C273,448869
Events in quadrant D57,2384,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02601
B02530
C08970
D02770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12600.000000%
B12600.000000%
C1268164.285714%
D12610.793651%

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 126 126 1 1 0.79% 0.79%
B 126 126 0 0 0.00% 0.00%
C 125 125 88 88 70.40% 70.40%
D 126 126 1 1 0.79% 0.79%

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 6886 1610.22 12 12 4.3
A 9 143 1794 417.43 12 12 4.3
A 6 10 1759 409.23 12 12 4.3
B 4 171 552 125.45 12 12 4.3
B 12 111 310 69.23 12 12 4.3
B 14 111 259 57.38 12 12 4.3
C 9 187 226082 56866.75 10 10 4.0
C 15 214 4114 1032.33 10 10 4.0
C 10 20 459 112.94 10 10 4.0
D 12 0 8947 2017.97 12 11 4.4
D 2 249 913 203.69 12 11 4.4
D 2 234 625 138.66 12 11 4.4

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