ASTROSAT CZTI

Data Quality Report

Orbit 20220205_A05_082T12_9000004908_level2

Creation date: 2022-02-08T10:40:14.475514
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/AS1A05_082T12_9000004908cztM0_level2_bc.evt modeM0/AS1A05_082T12_9000004908cztM0_level2_quad_clean.evt
Size (bytes)1,934,556,480237,087,360
Size1.8 GB 226.1 MB
Events in quadrant A4,782,0011,494,605
Events in quadrant B6,926,8121,502,311
Events in quadrant C14,868,2161,452,650
Events in quadrant D30,449,4821,146,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468630
B0557830
C0785510
D01280600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23002400.173898%
B230024872.117207%
C23002245010.651248%
D23002859237.353274%

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 29005 23006 3 3 0.01% 0.01%
B 29004 23001 46 46 0.16% 0.20%
C 29004 23001 1188 1188 4.10% 5.16%
D 29004 23001 6112 6112 21.07% 26.57%

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 9 143 133147 507.9 1165 1141 259.9
A 10 83 88365 335.6 1165 1141 259.9
A 13 254 39335 146.95 1165 1141 259.9
B 5 172 1091150 4713.51 1161 1133 231.3
B 4 251 504224 2175.49 1161 1133 231.3
B 5 255 296550 1277.46 1161 1133 231.3
C 4 254 9016651 35434.6 1099 1086 254.4
C 15 214 885348 3475.49 1099 1086 254.4
C 14 67 394226 1545.19 1099 1086 254.4
D 7 223 14593182 62837.08 958 925 232.2
D 12 235 6359757 27382.36 958 925 232.2
D 8 195 3294194 14181.45 958 925 232.2

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