ASTROSAT CZTI

Data Quality Report

Orbit 21251

Creation date: 2024-06-27T18:25:27.933376
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_037T01_9000003140_21251cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21251cztM0_level2_quad_clean.evt
Size (bytes)589,852,80091,800,000
Size562.5 MB 87.5 MB
Events in quadrant A3,502,043607,847
Events in quadrant B4,255,829590,919
Events in quadrant C3,282,552596,283
Events in quadrant D6,372,199520,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146032
B0170502
C0140232
D0235272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6655630.946657%
B66554076.115702%
C6655971.457551%
D665587313.117956%

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 7600 6655 0 0 0.00% 0.00%
B 7600 6656 296 296 3.89% 4.45%
C 7600 6655 5 5 0.07% 0.08%
D 7600 6655 713 713 9.38% 10.71%

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 15 236 227171 1334.51 836 819 169.6
A 11 47 27541 157.54 836 819 169.6
A 12 96 16731 93.81 836 819 169.6
B 0 189 922483 5902.81 812 791 156.1
B 0 190 60132 380.04 812 791 156.1
B 3 64 52299 329.87 812 791 156.1
C 14 238 124631 664.72 796 802 186.3
C 0 207 30481 159.32 796 802 186.3
C 0 10 22385 115.86 796 802 186.3
D 1 239 1873119 10036.2 760 739 186.6
D 13 104 401039 2145.66 760 739 186.6
D 14 34 308421 1649.22 760 739 186.6

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