ASTROSAT CZTI

Data Quality Report

Orbit 07245

Creation date: 2024-06-27T15:17:16.846471
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/AS1G05_246T03_9000000990_07245cztM0_level2.evt modeM0/AS1G05_246T03_9000000990_07245cztM0_level2_quad_clean.evt
Size (bytes)1,339,804,800199,699,200
Size1.2 GB 190.4 MB
Events in quadrant A8,681,5691,216,939
Events in quadrant B8,774,3441,230,715
Events in quadrant C10,910,8601,204,787
Events in quadrant D10,986,9891,148,272

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380824
B0381853
C0451933
D0453463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180943071.696695%
B180942381.315353%
C180941991.099812%
D180947003.868686%

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 19894 18094 104 104 0.52% 0.57%
B 19894 18094 27 27 0.14% 0.15%
C 19894 18094 15 15 0.08% 0.08%
D 19894 18094 426 426 2.14% 2.35%

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 0 23 297206 691.26 2090 2045 427.0
A 8 15 187175 433.57 2090 2045 427.0
A 14 111 77207 176.03 2090 2045 427.0
B 0 214 298185 735.67 2106 2054 402.5
B 4 81 58143 139.34 2106 2054 402.5
B 15 85 52440 125.17 2106 2054 402.5
C 9 68 2948539 6283.93 2026 2029 468.9
C 12 4 50471 103.31 2026 2029 468.9
C 13 61 15644 29.04 2026 2029 468.9
D 2 33 1100261 2240.74 2007 1945 490.2
D 2 216 926878 1887.01 2007 1945 490.2
D 13 137 531642 1080.67 2007 1945 490.2

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