ASTROSAT CZTI

Data Quality Report

Orbit 14576

Creation date: 2024-06-27T16:57:02.766601
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/AS1A04_089T01_9000002146_14576cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14576cztM0_level2_quad_clean.evt
Size (bytes)584,075,520101,828,160
Size557.0 MB 97.1 MB
Events in quadrant A6,128,066658,269
Events in quadrant B3,753,696679,976
Events in quadrant C4,051,694664,773
Events in quadrant D3,338,115649,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226943
B0151742
C0169012
D0137202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61781893.059242%
B61781943.140175%
C6178610.987375%
D6178861.392036%

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 7499 6180 6 6 0.08% 0.10%
B 7499 6180 93 93 1.24% 1.50%
C 7499 6180 0 0 0.00% 0.00%
D 7499 6180 38 38 0.51% 0.61%

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 23 2765952 17002.5 806 791 162.6
A 0 226 172655 1056.76 806 791 162.6
A 12 189 57269 347.27 806 791 162.6
B 10 16 397366 2603.03 816 800 152.3
B 0 189 62143 402.65 816 800 152.3
B 0 219 28462 181.57 816 800 152.3
C 3 233 909274 4934.02 803 811 184.1
C 13 61 5803 27.11 803 811 184.1
C 10 22 4824 21.8 803 811 184.1
D 10 199 151629 773.28 802 781 195.1
D 12 110 46553 234.64 802 781 195.1
D 2 152 45851 231.04 802 781 195.1

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