ASTROSAT CZTI

Data Quality Report

Orbit 44906

Creation date: 2024-06-27T23:07:50.811674
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_017T02_9000006032_44906cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44906cztM0_level2_quad_clean.evt
Size (bytes)556,606,080105,857,280
Size530.8 MB 101.0 MB
Events in quadrant A5,285,283727,322
Events in quadrant B3,299,960753,047
Events in quadrant C2,983,743729,634
Events in quadrant D8,529,152540,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206941
B0139191
C0133681
D0298441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65201712.622699%
B65201031.579755%
C6521490.751418%
D6521152623.401319%

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 7570 6521 34 34 0.45% 0.52%
B 7570 6521 28 28 0.37% 0.43%
C 7571 6522 4 4 0.05% 0.06%
D 7571 6522 1355 1355 17.90% 20.78%

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 2185897 14013.6 750 734 155.9
A 13 248 184618 1179.26 750 734 155.9
A 3 137 8222 48.02 750 734 155.9
B 0 168 109560 736.03 747 726 147.9
B 0 219 60920 407.08 747 726 147.9
B 0 183 35215 233.24 747 726 147.9
C 12 2 28939 162.07 742 746 174.0
C 9 54 27097 151.48 742 746 174.0
C 2 14 11635 62.59 742 746 174.0
D 12 33 3122293 18234.62 681 662 171.2
D 13 249 630798 3680.86 681 662 171.2
D 13 171 565232 3297.87 681 662 171.2

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