ASTROSAT CZTI

Data Quality Report

Orbit 20220507_A09_143T09_9000005122_level2

Creation date: 2022-05-11T14:07:15.456573
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_143T09_9000005122cztM0_level2_bc.evt modeM0/AS1A09_143T09_9000005122cztM0_level2_quad_clean.evt
Size (bytes)223,735,68067,631,040
Size213.4 MB 64.5 MB
Events in quadrant A1,017,081458,245
Events in quadrant B1,113,427455,482
Events in quadrant C1,177,158442,270
Events in quadrant D3,193,112413,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083990
B089000
C088140
D0152700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393690.228659%
B3936601.524390%
C3936511.295732%
D3936822.083333%

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 5820 3936 0 0 0.00% 0.00%
B 5820 3936 7 7 0.12% 0.18%
C 5820 3937 8 8 0.14% 0.20%
D 5820 3937 21 21 0.36% 0.53%

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 91700 1811.73 221 217 50.5
A 7 48 43839 863.89 221 217 50.5
A 13 6 23306 457.25 221 217 50.5
B 5 172 118607 2666.02 218 214 44.4
B 5 255 104128 2339.97 218 214 44.4
B 0 197 16552 367.9 218 214 44.4
C 15 214 157623 3116.76 212 211 50.5
C 0 10 110270 2179.17 212 211 50.5
C 1 23 63778 1258.63 212 211 50.5
D 10 203 2038009 38459.91 215 208 53.0
D 7 223 76540 1440.63 215 208 53.0
D 13 249 60337 1134.83 215 208 53.0

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