ASTROSAT CZTI

Data Quality Report

Orbit 13247

Creation date: 2024-06-27T16:38:20.792574
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/AS1G08_077T01_9000001970_13247cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13247cztM0_level2_quad_clean.evt
Size (bytes)493,822,080106,698,240
Size470.9 MB 101.8 MB
Events in quadrant A3,390,366677,696
Events in quadrant B3,979,079683,424
Events in quadrant C3,374,995697,922
Events in quadrant D3,718,027667,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151603
B0169252
C0152672
D0163562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7259781.074528%
B72593034.174129%
C7259670.922992%
D7259510.702576%

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 7685 7262 0 0 0.00% 0.00%
B 7685 7262 108 108 1.41% 1.49%
C 7685 7262 18 18 0.23% 0.25%
D 7685 7262 24 24 0.31% 0.33%

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 117714 694.26 829 808 168.4
A 15 239 68264 400.59 829 808 168.4
A 1 162 11465 63.29 829 808 168.4
B 4 239 540676 3440.39 828 806 156.9
B 0 230 92000 581.15 828 806 156.9
B 4 142 55141 346.26 828 806 156.9
C 15 208 133320 700.02 820 821 189.3
C 14 234 33164 170.87 820 821 189.3
C 13 61 5948 27.09 820 821 189.3
D 1 52 499023 2568.64 807 782 194.0
D 5 222 50390 255.75 807 782 194.0
D 8 195 47137 238.98 807 782 194.0

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