ASTROSAT CZTI

Data Quality Report

Orbit 32140

Creation date: 2024-06-27T20:36:55.755510
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/AS1T04_051T01_9000004686_32140cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32140cztM0_level2_quad_clean.evt
Size (bytes)685,031,040100,313,280
Size653.3 MB 95.7 MB
Events in quadrant A3,426,434660,535
Events in quadrant B6,786,289634,154
Events in quadrant C3,665,153645,250
Events in quadrant D6,396,257610,475

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145222
B0250502
C0152952
D0241059

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69891612.303620%
B69905567.954220%
C69902884.120172%
D69893274.678781%

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 7069 6991 0 0 0.00% 0.00%
B 7070 6992 184 184 2.60% 2.63%
C 7070 6992 22 22 0.31% 0.31%
D 7069 6991 213 213 3.01% 3.05%

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 13 6 21227 115.2 877 859 176.8
A 12 189 19160 103.51 877 859 176.8
A 13 254 13213 69.87 877 859 176.8
B 6 159 1906337 11759.53 848 827 162.0
B 10 245 1090163 6722.65 848 827 162.0
B 5 172 284169 1748.6 848 827 162.0
C 14 238 165391 842.3 833 839 195.4
C 0 10 158516 807.11 833 839 195.4
C 14 254 47937 241.08 833 839 195.4
D 8 195 2426348 12142.44 837 815 199.8
D 12 233 328544 1640.64 837 815 199.8
D 12 218 190807 951.12 837 815 199.8

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