ASTROSAT CZTI

Data Quality Report

Orbit 03765

Creation date: 2024-06-27T14:33:23.432549
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/AS1G05_248T01_9000000486_03765cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03765cztM0_level2_quad_clean.evt
Size (bytes)507,104,64089,559,360
Size483.6 MB 85.4 MB
Events in quadrant A3,908,282563,375
Events in quadrant B4,091,586566,375
Events in quadrant C3,272,769556,732
Events in quadrant D3,610,661538,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161343
B0166142
C0147232
D0154952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69872323.320452%
B69871011.445542%
C6987771.102047%
D69871562.232718%

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 7962 6987 83 83 1.04% 1.19%
B 7962 6987 4 4 0.05% 0.06%
C 7962 6988 8 8 0.10% 0.11%
D 7962 6987 69 69 0.87% 0.99%

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 0 118 407524 2426.02 827 809 167.6
A 13 251 148973 883.79 827 809 167.6
A 0 50 53814 316.17 827 809 167.6
B 15 204 689225 4239.88 838 818 162.4
B 15 54 43853 265.05 838 818 162.4
B 0 244 31789 190.75 838 818 162.4
C 14 234 64666 342.86 801 804 186.3
C 2 53 54335 287.39 801 804 186.3
C 14 67 10283 50.89 801 804 186.3
D 8 112 149448 766.85 799 775 193.9
D 13 25 148099 759.89 799 775 193.9
D 13 239 77006 393.2 799 775 193.9

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
Veto Counter