ASTROSAT CZTI

Data Quality Report

Orbit 40020

Creation date: 2024-06-27T22:11:21.419557
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_054T03_9000005516_40020cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40020cztM0_level2_quad_clean.evt
Size (bytes)952,090,560249,284,160
Size908.0 MB 237.7 MB
Events in quadrant A8,280,7981,660,929
Events in quadrant B8,575,2001,695,352
Events in quadrant C7,756,5921,634,754
Events in quadrant D9,423,1261,480,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342395
B0361764
C0330114
D0385124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15586960.615937%
B155862551.636084%
C155861070.686514%
D155865233.355576%

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 19822 15589 56 56 0.28% 0.36%
B 19822 15589 136 136 0.69% 0.87%
C 19822 15589 90 90 0.45% 0.58%
D 19822 15589 443 443 2.23% 2.84%

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 1212360 3523.76 1692 1659 343.6
A 13 248 258829 748.5 1692 1659 343.6
A 2 79 103392 296.1 1692 1659 343.6
B 4 171 1731378 5327.03 1681 1637 324.7
B 0 230 67457 202.7 1681 1637 324.7
B 4 81 44540 132.13 1681 1637 324.7
C 15 214 636124 1647.97 1655 1665 385.0
C 14 254 575515 1490.54 1655 1665 385.0
C 15 208 33248 82.03 1655 1665 385.0
D 12 227 1824818 4602.38 1634 1591 396.1
D 13 249 431879 1086.18 1634 1591 396.1
D 2 31 419453 1054.81 1634 1591 396.1

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