ASTROSAT CZTI

Data Quality Report

Orbit 33873

Creation date: 2024-06-27T20:53:41.454027
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/AS1A11_068T01_9000004836_33873cztM0_level2.evt modeM0/AS1A11_068T01_9000004836_33873cztM0_level2_quad_clean.evt
Size (bytes)537,903,36054,296,640
Size513.0 MB 51.8 MB
Events in quadrant A2,615,990339,228
Events in quadrant B4,062,427316,983
Events in quadrant C4,024,205333,120
Events in quadrant D5,243,257297,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106933
B0153462
C0155482
D0191322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5094130.255202%
B50944488.794660%
C50942354.613271%
D509460011.778563%

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 7247 5095 0 0 0.00% 0.00%
B 7247 5095 296 296 4.08% 5.81%
C 7247 5095 172 172 2.37% 3.38%
D 7247 5095 547 547 7.55% 10.74%

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 13158 93.99 671 659 133.0
A 10 83 11713 83.12 671 659 133.0
A 13 254 9619 67.37 671 659 133.0
B 5 172 1343626 11065.07 642 627 121.4
B 5 255 41224 334.48 642 627 121.4
B 0 199 29399 237.05 642 627 121.4
C 3 233 415127 2844.74 641 649 145.7
C 0 10 355378 2434.65 641 649 145.7
C 3 9 265455 1817.48 641 649 145.7
D 12 235 1428155 9212.48 627 610 155.0
D 8 195 465367 2999.25 627 610 155.0
D 7 223 222853 1434.22 627 610 155.0

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