ASTROSAT CZTI

Data Quality Report

Orbit 28872

Creation date: 2024-06-27T19:57:26.561041
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/AS1A10_123T07_9000004140_28872cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28872cztM0_level2_quad_clean.evt
Size (bytes)589,311,36091,048,320
Size562.0 MB 86.8 MB
Events in quadrant A3,259,498587,212
Events in quadrant B4,183,149590,684
Events in quadrant C3,377,598575,798
Events in quadrant D6,562,300525,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141812
B0170022
C0144442
D0241862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6856400.583431%
B68562193.194282%
C68561251.823221%
D685681911.945741%

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 7756 6856 0 0 0.00% 0.00%
B 7756 6856 87 87 1.12% 1.27%
C 7756 6856 0 0 0.00% 0.00%
D 7756 6856 771 771 9.94% 11.25%

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 13 254 15222 85.32 839 823 168.8
A 3 137 8317 44.41 839 823 168.8
A 0 226 6988 36.53 839 823 168.8
B 10 246 437632 2764.96 828 807 158.0
B 10 245 425800 2690.07 828 807 158.0
B 5 255 22742 138.84 828 807 158.0
C 14 238 137810 712.55 812 817 192.3
C 3 233 54599 279.74 812 817 192.3
C 14 254 14598 71.68 812 817 192.3
D 8 195 2067787 11032.28 779 756 187.4
D 7 80 953908 5087.22 779 756 187.4
D 13 104 332540 1770.82 779 756 187.4

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