ASTROSAT CZTI

Data Quality Report

Orbit 20220415_T05_022T01_9000005070_level2

Creation date: 2022-09-12T18:17:43.895631
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/AS1T05_022T01_9000005070cztM0_level2_bc.evt modeM0/AS1T05_022T01_9000005070cztM0_level2_quad_clean.evt
Size (bytes)4,410,264,960966,358,080
Size4.1 GB 921.6 MB
Events in quadrant A16,847,8596,457,688
Events in quadrant B48,212,4365,622,598
Events in quadrant C23,578,6226,382,724
Events in quadrant D39,795,7725,639,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550630
B03891670
C01761250
D02573410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02870
B02870
C02870
D02870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A752421080.143537%
B752423116941.425002%
C7524215592.071981%
D75242988613.138938%

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 103977 75258 2 2 0.00% 0.00%
B 103977 75242 473 473 0.45% 0.63%
C 103977 75242 152 152 0.15% 0.20%
D 103977 75234 1390 1390 1.34% 1.85%

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 1352988 1588.71 3882 3825 849.2
A 13 6 199033 229.87 3882 3825 849.2
A 9 143 143960 165.02 3882 3825 849.2
B 4 251 26769913 42214.07 3113 3051 634.1
B 5 236 5242103 8262.52 3113 3051 634.1
B 5 172 1666029 2622.69 3113 3051 634.1
C 0 10 3189922 3661.1 3807 3780 870.3
C 15 214 2881562 3306.77 3807 3780 870.3
C 0 207 1962315 2250.49 3807 3780 870.3
D 7 80 13216704 15488.76 3559 3445 853.1
D 8 195 3388924 3968.5 3559 3445 853.1
D 13 249 1725913 2019.1 3559 3445 853.1

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