ASTROSAT CZTI

Data Quality Report

Orbit 31106

Creation date: 2024-06-27T20:23:26.060233
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_109T01_9000004492_31106cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31106cztM0_level2_quad_clean.evt
Size (bytes)599,653,440111,502,080
Size571.9 MB 106.3 MB
Events in quadrant A3,766,418745,889
Events in quadrant B5,550,597739,922
Events in quadrant C4,105,658720,489
Events in quadrant D4,290,569709,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156052
B0206412
C0166302
D0172642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66161281.934704%
B66162363.567110%
C66163164.776300%
D66161332.010278%

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 9176 6618 0 0 0.00% 0.00%
B 9176 6618 3 3 0.03% 0.05%
C 9176 6618 36 36 0.39% 0.54%
D 9176 6618 11 11 0.12% 0.17%

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 13 254 11796 56.35 977 962 192.2
A 3 137 9059 42.12 977 962 192.2
A 0 226 8221 37.76 977 962 192.2
B 6 159 1754617 9946.04 955 936 176.3
B 10 247 22426 121.88 955 936 176.3
B 12 111 21024 113.93 955 936 176.3
C 0 10 245580 1128.87 938 951 216.7
C 14 238 153855 705.59 938 951 216.7
C 2 114 15456 66.93 938 951 216.7
D 8 195 496544 2227.07 955 936 222.5
D 13 174 129750 578.84 955 936 222.5
D 2 250 35707 156.24 955 936 222.5

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