ASTROSAT CZTI

Data Quality Report

Orbit 20453

Creation date: 2024-06-27T18:15:33.852773
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/AS1A05_160T02_9000003022_20453cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20453cztM0_level2_quad_clean.evt
Size (bytes)514,071,36078,822,720
Size490.3 MB 75.2 MB
Events in quadrant A3,253,619511,902
Events in quadrant B3,667,460522,649
Events in quadrant C3,583,713478,892
Events in quadrant D4,647,584444,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132622
B0145623
C0142432
D0179312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144560.911458%
B61431412.295295%
C61431642.669705%
D61432914.737099%

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 7509 6145 8 8 0.11% 0.13%
B 7508 6144 24 24 0.32% 0.39%
C 7508 6144 70 70 0.93% 1.14%
D 7508 6144 274 274 3.65% 4.46%

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 5 16 44599 267.33 820 806 163.8
A 6 16 40102 239.88 820 806 163.8
A 0 226 7071 38.24 820 806 163.8
B 7 220 137750 892.8 824 807 153.4
B 0 197 120662 781.39 824 807 153.4
B 0 189 95934 620.18 824 807 153.4
C 9 221 347915 1939.06 776 783 179.0
C 14 238 123766 686.97 776 783 179.0
C 3 233 85817 474.99 776 783 179.0
D 7 238 756204 4087.06 763 744 184.8
D 1 52 372736 2012.49 763 744 184.8
D 9 1 188624 1016.44 763 744 184.8

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