ASTROSAT CZTI

Data Quality Report

Orbit 37824

Creation date: 2024-06-27T21:44:56.569030
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/AS1T05_054T01_9000005350_37824cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37824cztM0_level2_quad_clean.evt
Size (bytes)476,899,200105,877,440
Size454.8 MB 101.0 MB
Events in quadrant A3,193,231726,177
Events in quadrant B4,199,600712,531
Events in quadrant C2,976,393720,260
Events in quadrant D3,711,956674,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127443
B0161132
C0120662
D0145452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5339440.824124%
B53392394.476494%
C5339490.917775%
D53392023.783480%

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 7372 5340 38 38 0.52% 0.71%
B 7372 5340 214 214 2.90% 4.01%
C 7372 5340 41 41 0.56% 0.77%
D 7372 5340 194 194 2.63% 3.63%

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 10 83 355724 2591.21 686 677 137.0
A 15 254 80085 579.54 686 677 137.0
A 9 143 55176 397.75 686 677 137.0
B 5 172 405364 3263.49 662 650 124.0
B 10 246 325538 2619.8 662 650 124.0
B 0 189 278551 2240.91 662 650 124.0
C 15 214 232075 1549.78 651 659 149.3
C 0 10 149162 994.52 651 659 149.3
C 15 159 32848 215.57 651 659 149.3
D 12 233 338449 2141.85 655 639 157.7
D 12 227 232436 1469.69 655 639 157.7
D 10 199 142925 902.15 655 639 157.7

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