ASTROSAT CZTI

Data Quality Report

Orbit 24218

Creation date: 2024-06-27T19:03:35.690350
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/AS1A07_010T12_9000003582_24218cztM0_level2.evt modeM0/AS1A07_010T12_9000003582_24218cztM0_level2_quad_clean.evt
Size (bytes)464,195,520109,368,000
Size442.7 MB 104.3 MB
Events in quadrant A3,129,371732,642
Events in quadrant B3,331,015738,109
Events in quadrant C3,644,583710,844
Events in quadrant D3,533,951699,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128401
B0134291
C0145601
D0143481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172951.539209%
B61731442.332739%
C61731802.915924%
D61731121.814353%

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 7267 6172 0 0 0.00% 0.00%
B 7268 6173 27 27 0.37% 0.44%
C 7268 6173 32 32 0.44% 0.52%
D 7268 6173 16 16 0.22% 0.26%

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 13 254 10383 59.74 810 794 160.5
A 0 226 7177 39.77 810 794 160.5
A 3 137 6766 37.21 810 794 160.5
B 12 17 119054 795.14 800 781 148.7
B 0 229 32127 210.74 800 781 148.7
B 4 52 18877 121.66 800 781 148.7
C 7 247 316127 1773.81 775 781 177.8
C 2 16 175381 982.12 775 781 177.8
C 14 238 124216 694.32 775 781 177.8
D 8 195 386970 2036.14 792 769 189.7
D 1 52 50320 261.24 792 769 189.7
D 12 233 46548 241.36 792 769 189.7

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