ASTROSAT CZTI

Data Quality Report

Orbit 15938

Creation date: 2024-06-27T17:15:21.152088
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/AS1A04_104T03_9000002348_15938cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15938cztM0_level2_quad_clean.evt
Size (bytes)443,986,56090,538,560
Size423.4 MB 86.3 MB
Events in quadrant A3,169,157578,725
Events in quadrant B3,485,494591,528
Events in quadrant C3,334,673563,597
Events in quadrant D3,015,102554,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137123
B0144832
C0140012
D0135132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499540.830897%
B6499751.154024%
C6499731.123250%
D6499140.215418%

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 7630 6501 5 5 0.07% 0.08%
B 7630 6501 6 6 0.08% 0.09%
C 7630 6501 0 0 0.00% 0.00%
D 7630 6501 4 4 0.05% 0.06%

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 15 239 35015 209.03 807 790 163.7
A 13 34 23760 140.29 807 790 163.7
A 0 226 7186 39.06 807 790 163.7
B 0 244 88522 565.26 813 793 155.2
B 4 173 49692 315.07 813 793 155.2
B 4 142 42089 266.08 813 793 155.2
C 3 233 198174 1096.32 771 776 180.1
C 14 238 122118 673.91 771 776 180.1
C 7 247 6920 34.12 771 776 180.1
D 15 0 42033 215.34 778 758 191.7
D 2 234 28638 145.46 778 758 191.7
D 2 120 9588 46.07 778 758 191.7

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