ASTROSAT CZTI

Data Quality Report

Orbit 16528

Creation date: 2024-06-27T17:23:59.432939
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/AS1T03_018T01_9000002442_16528cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16528cztM0_level2_quad_clean.evt
Size (bytes)465,206,40089,075,520
Size443.7 MB 84.9 MB
Events in quadrant A3,410,199571,564
Events in quadrant B3,600,092594,272
Events in quadrant C3,335,303569,335
Events in quadrant D3,324,019531,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139773
B0145572
C0137612
D0140352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170851.377634%
B6170580.940032%
C6170621.004862%
D61701522.463533%

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 7451 6172 51 51 0.68% 0.83%
B 7451 6171 7 7 0.09% 0.11%
C 7451 6172 6 6 0.08% 0.10%
D 7451 6172 147 147 1.97% 2.38%

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 15 174 383768 2446.34 780 765 156.6
A 15 223 17811 108.88 780 765 156.6
A 15 239 8964 52.37 780 765 156.6
B 15 35 233557 1560.35 792 776 149.2
B 0 168 41815 275.09 792 776 149.2
B 4 216 41203 270.98 792 776 149.2
C 3 233 249997 1423.72 752 758 175.1
C 14 238 117838 668.79 752 758 175.1
C 7 247 34926 195.18 752 758 175.1
D 1 52 372571 2035.14 744 723 182.7
D 7 38 65191 352.84 744 723 182.7
D 10 70 30537 163.17 744 723 182.7

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