ASTROSAT CZTI

Data Quality Report

Orbit 04171

Creation date: 2024-06-27T14:38:21.110906
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_240T01_9000000536_04171cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04171cztM0_level2_quad_clean.evt
Size (bytes)496,558,08069,287,040
Size473.6 MB 66.1 MB
Events in quadrant A4,417,259402,396
Events in quadrant B3,536,660416,431
Events in quadrant C3,092,600405,957
Events in quadrant D3,523,108392,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176093
B0149732
C0140422
D0151482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69004246.144928%
B6900791.144928%
C6900300.434783%
D6900821.188406%

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 7710 6901 346 346 4.49% 5.01%
B 7710 6901 6 6 0.08% 0.09%
C 7710 6901 0 0 0.00% 0.00%
D 7710 6901 47 47 0.61% 0.68%

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 990649 6056.88 802 787 163.4
A 0 199 164463 1001.52 802 787 163.4
A 3 1 132335 804.93 802 787 163.4
B 15 204 101726 628.2 824 805 160.6
B 14 167 58303 357.91 824 805 160.6
B 7 252 56732 348.13 824 805 160.6
C 13 61 6475 30.74 789 793 184.8
C 10 65 4357 19.28 789 793 184.8
C 12 4 3405 14.13 789 793 184.8
D 2 232 161790 832.79 786 763 193.4
D 13 239 105726 542.84 786 763 193.4
D 13 61 90136 462.22 786 763 193.4

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