ASTROSAT CZTI

Data Quality Report

Orbit 40649

Creation date: 2024-06-27T22:18:41.638055
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/AS1A12_029T01_9000005556_40649cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40649cztM0_level2_quad_clean.evt
Size (bytes)551,327,04068,287,680
Size525.8 MB 65.1 MB
Events in quadrant A2,653,875584,325
Events in quadrant B11,612,72388,128
Events in quadrant C2,568,165563,859
Events in quadrant D3,193,714489,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106153
B0379572
C0105032
D0129112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4872180.369458%
B4872418485.878489%
C4872280.574713%
D48723276.711823%

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 6965 4873 4 4 0.06% 0.08%
B 6965 4872 4162 4162 59.76% 85.43%
C 6965 4873 25 25 0.36% 0.51%
D 6965 4873 13 13 0.19% 0.27%

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 440816 3803.94 568 558 115.7
A 15 191 10323 84.37 568 558 115.7
A 13 6 6948 55.21 568 558 115.7
B 7 202 10763303 317472.45 171 167 33.9
B 0 190 98769 2908.39 171 167 33.9
B 0 229 66971 1970.47 171 167 33.9
C 15 214 216949 1717.97 543 547 126.0
C 14 254 205019 1623.26 543 547 126.0
C 15 159 12548 95.27 543 547 126.0
D 12 227 901138 6913.95 526 511 130.3
D 12 191 140972 1078.29 526 511 130.3
D 2 250 53473 406.58 526 511 130.3

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