ASTROSAT CZTI

Data Quality Report

Orbit 27587

Creation date: 2024-06-27T19:41:47.567258
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/AS1C05_019T04_9000003974_27587cztM0_level2.evt modeM0/AS1C05_019T04_9000003974_27587cztM0_level2_quad_clean.evt
Size (bytes)468,843,840105,920,640
Size447.1 MB 101.0 MB
Events in quadrant A3,191,435691,089
Events in quadrant B3,317,853709,429
Events in quadrant C3,375,668690,980
Events in quadrant D3,874,953665,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137550
B0141220
C0143600
D0160810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471510.788132%
B6470550.850077%
C64701011.561051%
D64701141.761978%

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 7736 6472 3 3 0.04% 0.05%
B 7735 6471 1 1 0.01% 0.02%
C 7735 6471 7 7 0.09% 0.11%
D 7735 6471 78 78 1.01% 1.21%

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 8 192 15219 88.63 823 807 162.6
A 13 254 11543 66.02 823 807 162.6
A 3 137 7420 40.67 823 807 162.6
B 0 230 21510 135.39 827 807 152.9
B 12 111 18674 116.84 827 807 152.9
B 15 32 17691 110.41 827 807 152.9
C 14 238 131366 699.18 809 815 186.7
C 2 16 74332 393.73 809 815 186.7
C 10 22 8538 41.36 809 815 186.7
D 1 52 641494 3358.18 801 779 190.8
D 6 112 92578 481.15 801 779 190.8
D 2 250 68928 357.19 801 779 190.8

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