ASTROSAT CZTI

Data Quality Report

Orbit 16020

Creation date: 2024-06-27T17:16:52.252679
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/AS1T02_091T01_9000002368_16020cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16020cztM0_level2_quad_clean.evt
Size (bytes)419,169,60076,884,480
Size399.8 MB 73.3 MB
Events in quadrant A2,990,638485,256
Events in quadrant B3,246,358491,349
Events in quadrant C3,081,245470,432
Events in quadrant D2,969,803463,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125322
B0132711
C0126661
D0126671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5980410.685619%
B5980851.421405%
C5980741.237458%
D5980300.501672%

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 7096 5981 0 0 0.00% 0.00%
B 7096 5981 22 22 0.31% 0.37%
C 7096 5981 13 13 0.18% 0.22%
D 7096 5981 2 2 0.03% 0.03%

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 0 226 6876 39.3 771 758 155.7
A 15 69 6594 37.48 771 758 155.7
A 12 96 6256 35.31 771 758 155.7
B 7 220 80182 546.36 764 746 145.4
B 15 222 63462 431.36 764 746 145.4
B 4 173 27877 186.61 764 746 145.4
C 14 238 114644 669.03 731 737 170.3
C 3 233 109738 640.21 731 737 170.3
C 13 61 5296 26.78 731 737 170.3
D 2 152 118528 597.72 745 728 197.1
D 2 234 24732 121.8 745 728 197.1
D 13 172 10260 48.37 745 728 197.1

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