ASTROSAT CZTI

Data Quality Report

Orbit 47146

Creation date: 2024-06-27T23:32:15.572812
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/AS1C09_003T01_9000006298_47146cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47146cztM0_level2_quad_clean.evt
Size (bytes)535,279,680116,570,880
Size510.5 MB 111.2 MB
Events in quadrant A7,123,677789,562
Events in quadrant B3,921,920793,069
Events in quadrant C3,952,906742,603
Events in quadrant D4,240,769687,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266090
B0166250
C0167991
D0178740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7421761.024121%
B7422821.104823%
C74211031.387953%
D74211341.805687%

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 7421 7421 0 0 0.00% 0.00%
B 7422 7422 31 31 0.42% 0.42%
C 7421 7421 105 105 1.41% 1.41%
D 7421 7421 122 122 1.64% 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 3946601 23350.26 810 792 169.0
A 0 243 14334 80.14 810 792 169.0
A 13 254 11647 64.24 810 792 169.0
B 5 173 141483 892.99 805 782 157.6
B 0 190 119717 754.85 805 782 157.6
B 0 200 116676 735.55 805 782 157.6
C 15 208 432236 2377.1 776 778 181.5
C 14 254 249097 1368.1 776 778 181.5
C 14 67 223063 1224.67 776 778 181.5
D 2 249 483837 2455.01 785 759 196.8
D 1 47 417093 2115.82 785 759 196.8
D 8 48 65325 328.13 785 759 196.8

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