ASTROSAT CZTI

Data Quality Report

Orbit 31570

Creation date: 2024-06-27T20:30:04.791337
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/AS1A10_056T01_9000004598_31570cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31570cztM0_level2_quad_clean.evt
Size (bytes)549,141,120110,157,120
Size523.7 MB 105.1 MB
Events in quadrant A3,124,513736,590
Events in quadrant B5,074,643758,479
Events in quadrant C3,622,596728,060
Events in quadrant D4,394,509685,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131902
B0193042
C0146552
D0173154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133110.179358%
B6133781.271808%
C61331502.445785%
D61321071.744945%

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 7503 6134 0 0 0.00% 0.00%
B 7503 6133 5 5 0.07% 0.08%
C 7503 6134 11 11 0.15% 0.18%
D 7502 6132 62 62 0.83% 1.01%

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 8 255 43067 267.83 797 784 157.9
A 13 254 11098 65.33 797 784 157.9
A 3 137 7596 43.15 797 784 157.9
B 6 159 1688197 11219.85 805 787 150.4
B 4 80 149928 991.66 805 787 150.4
B 0 190 43737 285.58 805 787 150.4
C 10 22 210750 1158.33 782 788 181.3
C 3 233 159736 876.89 782 788 181.3
C 14 238 130180 713.84 782 788 181.3
D 8 195 1236828 6810.65 769 750 181.5
D 12 218 172140 944.34 769 750 181.5
D 7 223 27255 146.04 769 750 181.5

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