ASTROSAT CZTI

Data Quality Report

Orbit 07831

Creation date: 2024-06-27T15:24:34.217424
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/AS1G06_077T02_9000001076_07831cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07831cztM0_level2_quad_clean.evt
Size (bytes)479,139,84096,932,160
Size456.9 MB 92.4 MB
Events in quadrant A3,504,944612,564
Events in quadrant B3,489,082633,202
Events in quadrant C3,478,687628,156
Events in quadrant D3,582,597594,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149433
B0145082
C0145932
D0151572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710440.655738%
B6710640.953800%
C6710520.774963%
D6710911.356185%

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 7950 6711 4 4 0.05% 0.06%
B 7950 6711 6 6 0.08% 0.09%
C 7950 6711 1 1 0.01% 0.01%
D 7950 6711 56 56 0.70% 0.83%

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 15 239 301767 1819.28 822 806 165.4
A 6 16 22928 133.73 822 806 165.4
A 0 226 7805 42.31 822 806 165.4
B 0 219 87585 549.94 834 817 157.8
B 15 204 46170 287.45 834 817 157.8
B 4 81 38154 236.64 834 817 157.8
C 1 16 197767 1041.98 817 825 189.0
C 8 229 80368 420.85 817 825 189.0
C 12 4 6169 28.27 817 825 189.0
D 7 71 156291 782.29 809 786 198.8
D 2 136 136583 683.15 809 786 198.8
D 2 152 104466 521.58 809 786 198.8

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