ASTROSAT CZTI

Data Quality Report

Orbit 50569

Creation date: 2025-02-02T13:05:28.725869
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/AS1T05_239T01_9000006444_50569cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50569cztM0_level2_quad_clean.evt
Size (bytes)686,358,72096,649,920
Size654.6 MB 92.2 MB
Events in quadrant A5,379,545640,454
Events in quadrant B4,273,911718,921
Events in quadrant C8,511,628506,859
Events in quadrant D6,680,358555,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207561
B0178431
C0304301
D0250361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72394906.768891%
B72393134.323802%
C7240185525.621547%
D724087512.085635%

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 7378 7238 307 307 4.16% 4.24%
B 7378 7238 89 89 1.21% 1.23%
C 7379 7239 1747 1747 23.68% 24.13%
D 7379 7239 945 945 12.81% 13.05%

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 12 80 985727 5209.56 765 746 189.1
A 12 250 415122 2191.63 765 746 189.1
A 4 3 251107 1324.16 765 746 189.1
B 7 0 268869 1638.86 766 739 163.6
B 5 185 177944 1083.11 766 739 163.6
B 0 229 142208 864.69 766 739 163.6
C 15 196 3773600 21651.47 637 633 174.3
C 13 3 626769 3593.13 637 633 174.3
C 0 208 325619 1864.96 637 633 174.3
D 8 246 1546482 7641.31 719 691 202.3
D 6 42 529711 2615.11 719 691 202.3
D 12 128 317570 1566.43 719 691 202.3

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