ASTROSAT CZTI

Data Quality Report

Orbit 41140

Creation date: 2024-06-27T22:24:55.838224
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_052T04_9000005602_41140cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41140cztM0_level2_quad_clean.evt
Size (bytes)357,888,96097,179,840
Size341.3 MB 92.7 MB
Events in quadrant A3,148,356666,706
Events in quadrant B3,583,351641,929
Events in quadrant C2,801,352651,412
Events in quadrant D3,291,177601,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125063
B0141932
C0115642
D0133622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5442340.624770%
B54423696.780595%
C5442490.900404%
D54421021.874311%

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 7446 5443 22 22 0.30% 0.40%
B 7446 5443 296 296 3.98% 5.44%
C 7446 5443 42 42 0.56% 0.77%
D 7446 5443 89 89 1.20% 1.64%

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 520871 4084.99 633 620 127.4
A 4 0 66784 519.51 633 620 127.4
A 2 79 48076 372.62 633 620 127.4
B 0 245 1157768 10067.81 603 588 114.9
B 0 190 33930 290.09 603 588 114.9
B 5 255 18705 157.62 603 588 114.9
C 15 214 234258 1640.27 614 619 142.4
C 0 10 135835 949.29 614 619 142.4
C 12 249 26664 182.85 614 619 142.4
D 2 16 266714 1781.81 620 603 149.3
D 13 249 199581 1332.31 620 603 149.3
D 2 249 199548 1332.08 620 603 149.3

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