ASTROSAT CZTI

Data Quality Report

Orbit 37446

Creation date: 2024-06-27T21:40:04.666415
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/AS1A09_002T01_9000005322_37446cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37446cztM0_level2_quad_clean.evt
Size (bytes)501,989,76067,193,280
Size478.7 MB 64.1 MB
Events in quadrant A3,699,984428,353
Events in quadrant B3,245,473429,636
Events in quadrant C4,061,097401,671
Events in quadrant D3,841,029407,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144873
B0129812
C0153172
D0149112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5245731.391802%
B52452063.927550%
C524553610.219256%
D52451382.631077%

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 7098 5246 43 43 0.61% 0.82%
B 7098 5246 149 149 2.10% 2.84%
C 7098 5246 479 479 6.75% 9.13%
D 7098 5246 144 144 2.03% 2.74%

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 15 222 986636 8088.74 610 599 121.9
A 10 83 271868 2225.3 610 599 121.9
A 9 143 24599 196.88 610 599 121.9
B 15 35 511158 4512.72 600 585 113.1
B 0 189 73475 644.24 600 585 113.1
B 5 172 73262 642.36 600 585 113.1
C 14 254 1385806 10595.39 569 574 130.7
C 15 214 230465 1758.39 569 574 130.7
C 0 10 208160 1587.79 569 574 130.7
D 12 235 664576 4692.13 586 570 141.5
D 2 249 182555 1285.98 586 570 141.5
D 2 152 157191 1106.75 586 570 141.5

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