ASTROSAT CZTI

Data Quality Report

Orbit 17824

Creation date: 2024-06-27T17:41:21.998891
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_015T01_9000002650_17824cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17824cztM0_level2_quad_clean.evt
Size (bytes)492,298,56083,448,000
Size469.5 MB 79.6 MB
Events in quadrant A3,298,554511,794
Events in quadrant B3,891,266520,465
Events in quadrant C3,306,092502,036
Events in quadrant D3,924,198491,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146881
B0161221
C0146041
D0167081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71971061.472836%
B71982112.931370%
C71981171.625452%
D71972203.056829%

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 7557 7198 0 0 0.00% 0.00%
B 7558 7200 73 73 0.97% 1.01%
C 7558 7199 0 0 0.00% 0.00%
D 7557 7198 92 92 1.22% 1.28%

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 15 174 26161 144.94 849 828 174.8
A 3 0 9832 51.52 849 828 174.8
A 0 226 7327 37.18 849 828 174.8
B 10 16 238469 1452.47 845 823 163.6
B 10 245 172578 1049.75 845 823 163.6
B 0 219 66578 401.89 845 823 163.6
C 14 238 124323 640.71 814 819 192.8
C 13 61 5818 25.93 814 819 192.8
C 1 16 4803 20.67 814 819 192.8
D 7 238 603670 3052.71 814 792 197.5
D 13 104 82948 416.0 814 792 197.5
D 10 70 80715 404.69 814 792 197.5

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