ASTROSAT CZTI

Data Quality Report

Orbit 07470

Creation date: 2024-06-27T15:20:11.064717
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/AS1G06_116T01_9000001026_07470cztM0_level2.evt modeM0/AS1G06_116T01_9000001026_07470cztM0_level2_quad_clean.evt
Size (bytes)436,043,520121,250,880
Size415.8 MB 115.6 MB
Events in quadrant A2,908,272807,771
Events in quadrant B3,060,199828,100
Events in quadrant C2,915,622819,946
Events in quadrant D3,887,245770,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131803
B0134702
C0130952
D0157812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385550.861394%
B6385921.440877%
C6385440.689115%
D63851572.458888%

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 7520 6386 3 3 0.04% 0.05%
B 7520 6386 22 22 0.29% 0.34%
C 7520 6386 0 0 0.00% 0.00%
D 7520 6385 86 86 1.14% 1.35%

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 15 234 15188 95.72 747 730 151.0
A 13 248 11589 71.89 747 730 151.0
A 3 1 7625 45.65 747 730 151.0
B 0 85 51785 357.37 757 737 142.8
B 0 214 41734 287.0 757 737 142.8
B 4 170 18708 125.81 757 737 142.8
C 9 68 11986 65.9 741 743 170.6
C 13 61 5728 29.22 741 743 170.6
C 1 16 4968 24.76 741 743 170.6
D 13 105 308693 1743.73 729 705 176.6
D 12 221 217146 1225.42 729 705 176.6
D 12 233 145098 817.5 729 705 176.6

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