ASTROSAT CZTI

Data Quality Report

Orbit 12856

Creation date: 2024-06-27T16:33:12.584923
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/AS1A04_048T01_9000001890_12856cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12856cztM0_level2_quad_clean.evt
Size (bytes)490,308,48084,052,800
Size467.6 MB 80.2 MB
Events in quadrant A3,471,637521,622
Events in quadrant B4,427,696519,635
Events in quadrant C3,157,491522,924
Events in quadrant D3,325,500502,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146772
B0175271
C0140431
D0145971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68741031.498400%
B68744656.764620%
C6874360.523713%
D6874771.120163%

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 7460 6876 11 11 0.15% 0.16%
B 7460 6876 243 243 3.26% 3.53%
C 7460 6876 0 0 0.00% 0.00%
D 7460 6876 52 52 0.70% 0.76%

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 12 189 152936 899.91 832 815 169.0
A 15 222 74450 435.61 832 815 169.0
A 8 15 22335 127.31 832 815 169.0
B 4 239 768196 4961.98 809 790 154.7
B 0 85 140709 904.7 809 790 154.7
B 0 219 108364 695.56 809 790 154.7
C 13 61 5935 27.21 809 814 188.2
C 3 202 2028 6.45 809 814 188.2
C 7 247 1819 5.34 809 814 188.2
D 1 52 212391 1096.28 805 783 193.0
D 13 104 43797 222.84 805 783 193.0
D 2 234 22180 110.85 805 783 193.0

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