ASTROSAT CZTI

Data Quality Report

Orbit 21986

Creation date: 2024-06-27T18:34:55.960402
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/AS1A07_094T01_9000003248_21986cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21986cztM0_level2_quad_clean.evt
Size (bytes)500,425,920103,968,000
Size477.2 MB 99.2 MB
Events in quadrant A3,663,749700,053
Events in quadrant B3,800,341703,400
Events in quadrant C3,499,558652,809
Events in quadrant D3,764,015652,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150222
B0155142
C0143822
D0151624

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63021292.046969%
B63021482.348461%
C63021452.300857%
D63012023.205840%

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 7612 6302 1 1 0.01% 0.02%
B 7612 6302 16 16 0.21% 0.25%
C 7612 6302 0 0 0.00% 0.00%
D 7611 6301 103 103 1.35% 1.63%

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 14 235 75533 405.98 928 913 183.8
A 15 236 12463 62.84 928 913 183.8
A 13 254 11099 55.42 928 913 183.8
B 0 197 93493 553.69 905 889 167.2
B 3 64 84246 498.41 905 889 167.2
B 0 230 84010 496.99 905 889 167.2
C 14 238 137654 699.58 856 865 195.5
C 9 54 20872 102.32 856 865 195.5
C 13 61 6029 26.41 856 865 195.5
D 7 223 262523 1231.8 883 860 212.4
D 7 238 59475 275.93 883 860 212.4
D 1 52 53438 247.51 883 860 212.4

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