ASTROSAT CZTI

Data Quality Report

Orbit 42922

Creation date: 2024-06-27T22:45:49.689385
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_143T01_9000005830_42922cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42922cztM0_level2_quad_clean.evt
Size (bytes)415,183,68087,903,360
Size396.0 MB 83.8 MB
Events in quadrant A3,323,866629,222
Events in quadrant B4,879,230510,491
Events in quadrant C2,561,243610,976
Events in quadrant D4,199,347546,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131352
B0180691
C0107561
D0159811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52031462.806073%
B5204120623.174481%
C5204240.461184%
D52043055.860876%

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 7146 5204 130 130 1.82% 2.50%
B 7147 5205 1053 1053 14.73% 20.23%
C 7147 5205 21 21 0.29% 0.40%
D 7147 5205 303 303 4.24% 5.82%

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 546720 4541.75 588 576 120.2
A 15 237 331776 2754.27 588 576 120.2
A 2 79 115854 958.65 588 576 120.2
B 4 81 2776508 28403.97 513 500 97.7
B 4 171 42700 431.78 513 500 97.7
B 5 172 28184 283.26 513 500 97.7
C 15 214 209390 1558.58 580 585 134.0
C 14 254 65124 481.74 580 585 134.0
C 12 249 13387 95.56 580 585 134.0
D 1 47 610491 4424.8 571 556 137.8
D 1 52 455950 3303.67 571 556 137.8
D 2 249 199124 1440.52 571 556 137.8

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