ASTROSAT CZTI

Data Quality Report

Orbit 26685

Creation date: 2024-06-27T19:31:46.211900
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/AS1A09_145T01_9000003848_26685cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26685cztM0_level2_quad_clean.evt
Size (bytes)768,772,800136,244,160
Size733.2 MB 129.9 MB
Events in quadrant A4,069,488920,923
Events in quadrant B8,158,188864,213
Events in quadrant C4,287,190890,141
Events in quadrant D6,183,240851,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176210
B0298700
C0180000
D0242260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B091
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8605380.441604%
B8570117613.722287%
C8585981.141526%
D85415866.861023%

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 10004 9012 2 2 0.02% 0.02%
B 10004 8990 928 928 9.28% 10.32%
C 10004 8970 5 5 0.05% 0.06%
D 10004 8965 419 419 4.19% 4.67%

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 13 27424 124.0 1045 1028 212.9
A 13 254 15186 66.51 1045 1028 212.9
A 3 137 9424 39.44 1045 1028 212.9
B 0 189 4163143 21725.05 1002 981 191.6
B 5 172 28730 144.84 1002 981 191.6
B 12 111 22509 112.37 1002 981 191.6
C 14 238 161481 676.93 1002 1012 237.1
C 15 208 82054 341.87 1002 1012 237.1
C 3 233 65810 273.35 1002 1012 237.1
D 7 80 1043572 4288.41 981 953 243.1
D 1 52 732121 3007.38 981 953 243.1
D 2 250 461935 1896.07 981 953 243.1

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