ASTROSAT CZTI

Data Quality Report

Orbit 12871

Creation date: 2024-06-27T16:33:23.189205
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/AS1G08_041T01_9000001892_12871cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12871cztM0_level2_quad_clean.evt
Size (bytes)554,811,84075,456,000
Size529.1 MB 72.0 MB
Events in quadrant A3,656,771466,820
Events in quadrant B5,652,202422,483
Events in quadrant C3,214,136468,107
Events in quadrant D3,810,443445,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151202
B0213001
C0142201
D0160601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69131472.126428%
B691381711.818313%
C6913570.824533%
D69131422.054101%

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 7264 6915 23 23 0.32% 0.33%
B 7264 6915 460 460 6.33% 6.65%
C 7264 6915 0 0 0.00% 0.00%
D 7264 6915 63 63 0.87% 0.91%

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 11 29 174350 1007.42 847 827 172.2
A 12 189 76299 438.17 847 827 172.2
A 1 162 38335 217.76 847 827 172.2
B 4 239 1255669 8309.49 793 773 151.0
B 0 85 657512 4348.7 793 773 151.0
B 0 219 214135 1412.81 793 773 151.0
C 13 61 6147 27.78 822 827 191.5
C 8 128 3466 13.78 822 827 191.5
C 0 207 2480 8.63 822 827 191.5
D 1 52 631607 3175.6 818 796 198.6
D 2 234 31857 156.37 818 796 198.6
D 2 14 16485 78.98 818 796 198.6

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