ASTROSAT CZTI

Data Quality Report

Orbit 36252

Creation date: 2024-06-27T21:24:24.168139
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_071T37_9000005180_36252cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36252cztM0_level2_quad_clean.evt
Size (bytes)511,329,60082,667,520
Size487.6 MB 78.8 MB
Events in quadrant A3,163,381523,134
Events in quadrant B4,280,868514,318
Events in quadrant C3,482,709518,172
Events in quadrant D4,113,490490,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134213
B0168542
C0141052
D0165822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A655780.122007%
B65573455.261553%
C6557871.326826%
D65571842.806161%

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 9242 6559 0 0 0.00% 0.00%
B 9242 6559 254 254 2.75% 3.87%
C 9242 6559 69 69 0.75% 1.05%
D 9242 6559 166 166 1.80% 2.53%

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 10 83 194511 1257.82 762 747 154.0
A 9 143 13076 80.03 762 747 154.0
A 13 254 11386 69.06 762 747 154.0
B 5 172 1007372 6986.19 743 722 144.1
B 5 236 201735 1395.04 743 722 144.1
B 0 189 38224 260.27 743 722 144.1
C 0 10 312648 1792.23 739 744 174.0
C 15 214 273672 1568.27 739 744 174.0
C 0 207 11295 60.63 739 744 174.0
D 12 6 514794 2843.37 731 709 180.8
D 13 171 224023 1235.14 731 709 180.8
D 2 153 159817 880.02 731 709 180.8

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