ASTROSAT CZTI

Data Quality Report

Orbit 40832

Creation date: 2024-06-27T22:21:05.166660
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_104T02_9000005572_40832cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40832cztM0_level2_quad_clean.evt
Size (bytes)309,706,56089,282,880
Size295.4 MB 85.1 MB
Events in quadrant A2,944,066597,050
Events in quadrant B2,484,844608,882
Events in quadrant C2,635,940580,583
Events in quadrant D2,971,856532,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122623
B0112192
C0113232
D0127182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5484240.437637%
B5484240.437637%
C5484240.437637%
D54841021.859956%

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 7127 5485 8 8 0.11% 0.15%
B 7127 5485 10 10 0.14% 0.18%
C 7127 5485 14 14 0.20% 0.26%
D 7127 5485 83 83 1.16% 1.51%

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 522065 4218.78 599 587 123.6
A 2 79 59409 475.87 599 587 123.6
A 13 248 23547 185.75 599 587 123.6
B 0 190 54528 465.81 594 577 115.8
B 5 255 44408 378.44 594 577 115.8
B 0 230 35528 301.77 594 577 115.8
C 15 214 234715 1707.24 583 587 137.1
C 0 10 76408 552.88 583 587 137.1
C 10 70 26020 185.46 583 587 137.1
D 13 249 247699 1736.31 583 565 142.3
D 2 16 126151 882.34 583 565 142.3
D 1 47 117458 821.27 583 565 142.3

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