ASTROSAT CZTI

Data Quality Report

Orbit 29186

Creation date: 2024-06-27T20:01:16.629066
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_048T07_9000004188_29186cztM0_level2.evt modeM0/AS1A10_048T07_9000004188_29186cztM0_level2_quad_clean.evt
Size (bytes)690,264,000109,434,240
Size658.3 MB 104.4 MB
Events in quadrant A4,037,626701,035
Events in quadrant B4,318,892713,706
Events in quadrant C6,469,971671,191
Events in quadrant D5,531,087666,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172392
B0181292
C0248873
D0221202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80821291.596140%
B80822913.600594%
C80815847.226828%
D80812793.452543%

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 8687 8086 0 0 0.00% 0.00%
B 8687 8085 7 7 0.08% 0.09%
C 8686 8085 40 40 0.46% 0.49%
D 8686 8085 120 120 1.38% 1.48%

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 15164 66.75 1045 1023 211.9
A 3 137 10710 45.72 1045 1023 211.9
A 0 226 8828 36.84 1045 1023 211.9
B 0 183 160105 777.29 1039 1009 204.7
B 5 255 34919 165.67 1039 1009 204.7
B 10 245 26958 126.78 1039 1009 204.7
C 3 233 2431807 10433.29 989 997 233.0
C 14 238 156061 665.55 989 997 233.0
C 2 114 19313 78.61 989 997 233.0
D 1 52 1016781 4173.19 1004 976 243.4
D 8 195 534071 2190.09 1004 976 243.4
D 13 153 100474 408.76 1004 976 243.4

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