ASTROSAT CZTI

Data Quality Report

Orbit 37562

Creation date: 2024-06-27T21:41:33.145028
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/AS1C07_001T11_9000005336_37562cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37562cztM0_level2_quad_clean.evt
Size (bytes)659,134,08088,168,320
Size628.6 MB 84.1 MB
Events in quadrant A2,524,624647,273
Events in quadrant B3,190,067650,589
Events in quadrant C2,772,222647,761
Events in quadrant D11,138,798374,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106842
B0128181
C0112741
D0365341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974120.241255%
B4974951.909932%
C4974911.829513%
D4974352970.948934%

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 6887 4975 7 7 0.10% 0.14%
B 6887 4975 62 62 0.90% 1.25%
C 6887 4975 72 72 1.05% 1.45%
D 6886 4973 3668 3668 53.27% 73.76%

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 10 83 277924 2414.2 565 553 114.9
A 9 143 26022 221.68 565 553 114.9
A 12 189 14981 125.58 565 553 114.9
B 0 189 237027 2238.66 565 549 105.6
B 5 172 160513 1514.32 565 549 105.6
B 0 213 97414 916.99 565 549 105.6
C 14 254 298205 2295.46 559 563 129.7
C 15 214 224367 1726.01 559 563 129.7
C 0 10 56806 433.75 559 563 129.7
D 12 235 8765647 93548.73 375 363 93.7
D 2 249 336885 3591.58 375 363 93.7
D 12 233 214707 2287.62 375 363 93.7

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