ASTROSAT CZTI

Data Quality Report

Orbit 33345

Creation date: 2024-06-27T20:47:43.272051
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_058T15_9000004786_33345cztM0_level2.evt modeM0/AS1A10_058T15_9000004786_33345cztM0_level2_quad_clean.evt
Size (bytes)588,968,64074,514,240
Size561.7 MB 71.1 MB
Events in quadrant A3,055,534472,356
Events in quadrant B4,881,463443,084
Events in quadrant C3,385,329463,544
Events in quadrant D6,085,057433,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129793
B0187122
C0137092
D0226022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6350120.188976%
B635071011.181102%
C6350600.944882%
D63502604.094488%

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 9335 6352 1 1 0.01% 0.02%
B 9335 6352 338 338 3.62% 5.32%
C 9335 6352 42 42 0.45% 0.66%
D 9335 6352 182 182 1.95% 2.87%

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 15 169 92737 602.34 758 743 152.7
A 14 254 20148 127.06 758 743 152.7
A 13 6 13647 84.49 758 743 152.7
B 5 172 900195 6434.63 731 712 139.8
B 0 219 809271 5784.19 731 712 139.8
B 0 189 71286 504.87 731 712 139.8
C 15 214 275622 1618.69 732 737 169.8
C 0 10 130407 763.57 732 737 169.8
C 1 23 70245 409.3 732 737 169.8
D 8 195 2041161 10510.09 720 704 194.1
D 12 218 471020 2422.53 720 704 194.1
D 7 222 232158 1192.18 720 704 194.1

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