ASTROSAT CZTI

Data Quality Report

Orbit 34739

Creation date: 2024-06-27T21:04:32.370667
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/AS1A10_048T04_9000004984_34739cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34739cztM0_level2_quad_clean.evt
Size (bytes)504,642,24072,455,040
Size481.3 MB 69.1 MB
Events in quadrant A2,869,366481,549
Events in quadrant B3,371,121493,010
Events in quadrant C2,998,497487,500
Events in quadrant D5,676,473351,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117552
B0134301
C0119101
D0206901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5425140.258065%
B5425691.271889%
C5425260.479263%
D542598018.064516%

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 7366 5426 8 8 0.11% 0.15%
B 7366 5426 49 49 0.67% 0.90%
C 7366 5426 18 18 0.24% 0.33%
D 7365 5425 669 669 9.08% 12.33%

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 15 223 93007 684.08 681 669 135.0
A 10 83 48555 354.76 681 669 135.0
A 15 169 42653 311.04 681 669 135.0
B 4 171 357232 2818.19 676 660 126.5
B 0 190 152342 1198.83 676 660 126.5
B 5 172 146059 1149.17 676 660 126.5
C 15 214 230265 1486.03 671 681 154.5
C 0 10 93077 598.05 671 681 154.5
C 14 67 28136 177.71 671 681 154.5
D 10 118 1941057 13845.26 579 566 140.2
D 8 195 636613 4538.15 579 566 140.2
D 1 52 594238 4235.81 579 566 140.2

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