ASTROSAT CZTI

Data Quality Report

Orbit 17055

Creation date: 2024-06-27T17:31:26.560847
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/AS1T03_004T01_9000002532_17055cztM0_level2.evt modeM0/AS1T03_004T01_9000002532_17055cztM0_level2_quad_clean.evt
Size (bytes)542,511,36089,202,240
Size517.4 MB 85.1 MB
Events in quadrant A3,771,351545,411
Events in quadrant B3,867,389554,399
Events in quadrant C4,539,661532,199
Events in quadrant D3,719,464524,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163341
B0164221
C0184511
D0165631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78292833.614766%
B78293204.087367%
C78293003.831907%
D78291942.477967%

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 7830 7830 1 1 0.01% 0.01%
B 7830 7830 0 0 0.00% 0.00%
C 7830 7830 0 0 0.00% 0.00%
D 7830 7830 16 16 0.20% 0.20%

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 3 254 42556 211.46 964 938 196.8
A 4 2 25316 123.87 964 938 196.8
A 0 226 8411 37.97 964 938 196.8
B 0 219 32703 169.74 964 938 187.1
B 12 111 22736 116.48 964 938 187.1
B 11 111 19779 100.68 964 938 187.1
C 3 233 789055 3640.32 922 927 216.5
C 14 238 140482 644.6 922 927 216.5
C 9 160 7055 28.3 922 927 216.5
D 10 70 111911 480.99 940 910 230.8
D 2 234 31240 131.43 940 910 230.8
D 5 222 20228 83.71 940 910 230.8

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