ASTROSAT CZTI

Data Quality Report

Orbit 15978

Creation date: 2024-06-27T17:15:59.376929
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/AS1T02_100T01_9000002354_15978cztM0_level2.evt modeM0/AS1T02_100T01_9000002354_15978cztM0_level2_quad_clean.evt
Size (bytes)438,865,92094,167,360
Size418.5 MB 89.8 MB
Events in quadrant A3,060,634623,128
Events in quadrant B3,398,450625,398
Events in quadrant C3,034,072593,507
Events in quadrant D3,380,089580,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131182
B0140931
C0129821
D0144181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6145580.943857%
B6145631.025224%
C6145701.139138%
D61451482.408462%

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 7416 6146 0 0 0.00% 0.00%
B 7416 6147 7 7 0.09% 0.11%
C 7416 6147 0 0 0.00% 0.00%
D 7416 6146 108 108 1.46% 1.76%

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 0 226 7225 40.02 795 782 161.0
A 12 194 6092 32.98 795 782 161.0
A 3 137 4831 25.15 795 782 161.0
B 7 220 73921 497.75 783 766 147.0
B 0 189 69085 464.85 783 766 147.0
B 4 216 47352 316.98 783 766 147.0
C 14 238 114491 658.12 737 743 172.8
C 3 233 35492 201.05 737 743 172.8
C 0 207 11105 59.95 737 743 172.8
D 12 218 253274 1387.1 752 734 182.1
D 7 55 122770 670.29 752 734 182.1
D 2 152 53015 287.16 752 734 182.1

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