ASTROSAT CZTI

Data Quality Report

Orbit 23808

Creation date: 2024-06-27T18:58:57.545316
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/AS1A07_113T01_9000003526_23808cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23808cztM0_level2_quad_clean.evt
Size (bytes)782,663,04066,683,520
Size746.4 MB 63.6 MB
Events in quadrant A3,478,264417,508
Events in quadrant B3,605,613426,219
Events in quadrant C3,553,635414,163
Events in quadrant D12,616,394296,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145822
B0148892
C0147342
D0420882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650430.646617%
B6650620.932331%
C66501021.533835%
D6650355853.503759%

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 7835 6650 0 0 0.00% 0.00%
B 7835 6651 11 11 0.14% 0.17%
C 7835 6650 2 2 0.03% 0.03%
D 7834 6649 3175 3175 40.53% 47.75%

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 13 254 11321 58.32 900 883 179.0
A 0 226 7905 39.24 900 883 179.0
A 3 137 7469 36.8 900 883 179.0
B 3 64 115159 680.45 890 869 168.0
B 12 111 19689 112.05 890 869 168.0
B 11 111 17950 101.7 890 869 168.0
C 14 238 139988 692.68 867 874 200.8
C 0 10 23927 114.79 867 874 200.8
C 2 16 6112 26.08 867 874 200.8
D 8 195 3725942 20810.97 748 728 179.0
D 1 52 3221664 17993.81 748 728 179.0
D 13 174 2778244 15516.64 748 728 179.0

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