ASTROSAT CZTI

Data Quality Report

Orbit 17002

Creation date: 2024-06-27T17:30:30.879979
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/AS1A05_143T01_9000002524_17002cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_17002cztM0_level2_quad_clean.evt
Size (bytes)591,641,28088,047,360
Size564.2 MB 84.0 MB
Events in quadrant A3,169,974579,512
Events in quadrant B5,126,362525,607
Events in quadrant C3,680,387564,259
Events in quadrant D5,488,151530,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138432
B0195392
C0152902
D0208492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6688691.031699%
B668887713.113038%
C6689921.375392%
D66895027.504859%

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 8509 6690 6 6 0.07% 0.09%
B 8509 6690 662 662 7.78% 9.90%
C 8510 6692 1 1 0.01% 0.01%
D 8510 6692 392 392 4.61% 5.86%

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 15 174 57483 342.89 810 792 165.3
A 0 226 7298 39.35 810 792 165.3
A 12 194 6118 32.21 810 792 165.3
B 3 64 1897616 12885.11 764 743 147.2
B 15 35 127700 862.4 764 743 147.2
B 0 197 26860 177.41 764 743 147.2
C 3 233 510638 2783.63 777 782 183.2
C 14 238 117267 635.97 777 782 183.2
C 5 112 21724 114.34 777 782 183.2
D 1 52 2243334 12088.38 761 739 185.5
D 4 239 208833 1121.7 761 739 185.5
D 2 152 64853 345.6 761 739 185.5

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