ASTROSAT CZTI

Data Quality Report

Orbit 45289

Creation date: 2024-06-27T23:12:00.229959
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/AS1A13_024T03_9000006064_45289cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45289cztM0_level2_quad_clean.evt
Size (bytes)483,042,240111,916,800
Size460.7 MB 106.7 MB
Events in quadrant A5,817,279727,936
Events in quadrant B3,887,916769,084
Events in quadrant C3,221,580747,000
Events in quadrant D4,407,630654,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223063
B0165032
C0148342
D0179832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70293545.036278%
B70292974.225352%
C70301151.635846%
D70303695.248933%

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 7169 7030 58 58 0.81% 0.83%
B 7169 7029 45 45 0.63% 0.64%
C 7170 7031 7 7 0.10% 0.10%
D 7170 7031 216 216 3.01% 3.07%

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 2367620 14150.77 802 782 167.3
A 13 248 266293 1587.43 802 782 167.3
A 10 248 73573 435.2 802 782 167.3
B 0 189 431476 2689.74 801 776 160.1
B 5 172 80619 498.62 801 776 160.1
B 5 32 60947 375.77 801 776 160.1
C 14 254 60766 320.1 793 795 187.3
C 2 14 31526 164.03 793 795 187.3
C 3 233 30054 156.17 793 795 187.3
D 2 249 676126 3386.25 782 756 199.4
D 9 49 363148 1817.01 782 756 199.4
D 13 171 94597 470.51 782 756 199.4

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