ASTROSAT CZTI

Data Quality Report

Orbit 09539

Creation date: 2024-06-27T15:47:26.868829
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/AS1G07_049T01_9000001352_09539cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09539cztM0_level2_quad_clean.evt
Size (bytes)503,305,920118,820,160
Size480.0 MB 113.3 MB
Events in quadrant A3,115,589822,482
Events in quadrant B3,004,294821,139
Events in quadrant C4,351,330776,575
Events in quadrant D4,375,043769,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130062
B0128081
C0168441
D0168601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58491021.743888%
B5849961.641306%
C58494627.898786%
D58493035.180373%

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 7144 5850 1 1 0.01% 0.02%
B 7144 5850 5 5 0.07% 0.09%
C 7144 5850 263 263 3.68% 4.50%
D 7144 5850 156 156 2.18% 2.67%

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 1 162 159230 1100.77 725 712 144.0
A 1 178 60682 416.44 725 712 144.0
A 1 161 59809 410.38 725 712 144.0
B 0 214 123643 923.23 720 705 133.2
B 15 204 27231 199.2 720 705 133.2
B 0 219 20606 149.45 720 705 133.2
C 4 254 1723560 11298.75 672 675 152.5
C 13 61 5156 29.39 672 675 152.5
C 8 222 2605 12.66 672 675 152.5
D 1 52 1525962 8348.23 680 666 182.7
D 8 195 60495 327.46 680 666 182.7
D 12 233 51565 278.58 680 666 182.7

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