ASTROSAT CZTI

Data Quality Report

Orbit 13248

Creation date: 2024-06-27T16:38:21.747667
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/AS1G08_077T01_9000001970_13248cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13248cztM0_level2_quad_clean.evt
Size (bytes)553,705,920111,312,000
Size528.1 MB 106.2 MB
Events in quadrant A3,613,842707,101
Events in quadrant B3,909,323720,509
Events in quadrant C3,503,204729,152
Events in quadrant D5,226,356685,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160522
B0168531
C0159501
D0209731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76071121.472328%
B76072693.536217%
C7607540.709872%
D76073134.114631%

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 7683 7609 0 0 0.00% 0.00%
B 7683 7609 84 84 1.09% 1.10%
C 7683 7609 18 18 0.23% 0.24%
D 7683 7609 234 234 3.05% 3.08%

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 12 189 215280 1213.66 863 842 176.7
A 15 239 64331 359.33 863 842 176.7
A 1 162 11774 61.87 863 842 176.7
B 4 239 412234 2514.56 866 843 163.6
B 0 214 33624 200.37 866 843 163.6
B 4 80 28488 168.98 866 843 163.6
C 15 208 143384 727.39 851 853 195.9
C 14 234 19075 92.99 851 853 195.9
C 8 128 11897 56.36 851 853 195.9
D 1 52 2019008 10134.51 829 802 199.1
D 8 195 37708 185.33 829 802 199.1
D 2 234 29269 142.95 829 802 199.1

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