ASTROSAT CZTI

Data Quality Report

Orbit 40377

Creation date: 2024-06-27T22:15:26.445400
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_056T02_9000005538_40377cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40377cztM0_level2_quad_clean.evt
Size (bytes)379,817,28090,604,800
Size362.2 MB 86.4 MB
Events in quadrant A3,158,318634,484
Events in quadrant B2,502,337649,202
Events in quadrant C2,666,285614,246
Events in quadrant D5,309,971465,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127973
B0112075
C0113192
D0194832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5425380.700461%
B5423120.221280%
C5425280.516129%
D5425117321.622120%

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 5426 23 23 0.32% 0.42%
B 7127 5425 9 9 0.13% 0.17%
C 7127 5426 23 23 0.32% 0.42%
D 7127 5426 590 590 8.28% 10.87%

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 480009 3908.34 595 585 122.7
A 13 248 203051 1650.53 595 585 122.7
A 6 10 113575 921.11 595 585 122.7
B 5 255 62418 537.22 594 579 115.1
B 4 171 56402 484.96 594 579 115.1
B 0 230 29221 248.82 594 579 115.1
C 15 214 234804 1724.53 583 589 135.8
C 14 254 83918 613.55 583 589 135.8
C 0 10 47695 346.84 583 589 135.8
D 12 227 2153205 16525.62 529 516 130.3
D 2 250 399712 3064.52 529 516 130.3
D 9 19 262517 2011.31 529 516 130.3

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