ASTROSAT CZTI

Data Quality Report

Orbit 17735

Creation date: 2024-06-27T17:40:11.474025
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_042T01_9000002630_17735cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17735cztM0_level2_quad_clean.evt
Size (bytes)449,953,92093,594,240
Size429.1 MB 89.3 MB
Events in quadrant A3,277,939591,106
Events in quadrant B3,246,187608,051
Events in quadrant C3,248,536579,731
Events in quadrant D3,382,023571,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145581
B0143321
C0142661
D0148291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69361962.825836%
B69371622.335303%
C69371882.710105%
D69371291.859593%

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 7076 6937 28 28 0.40% 0.40%
B 7077 6938 2 2 0.03% 0.03%
C 7077 6938 1 1 0.01% 0.01%
D 7077 6938 11 11 0.16% 0.16%

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 15 174 122174 719.96 821 800 168.6
A 0 226 7165 37.76 821 800 168.6
A 3 137 6301 32.63 821 800 168.6
B 12 111 19180 115.7 819 797 158.9
B 0 219 18179 109.4 819 797 158.9
B 11 111 16697 100.07 819 797 158.9
C 14 238 122548 657.63 783 785 185.2
C 3 233 30247 159.12 783 785 185.2
C 5 218 17641 91.04 783 785 185.2
D 1 52 242975 1230.49 795 772 196.8
D 2 165 48132 240.61 795 772 196.8
D 7 238 32898 163.21 795 772 196.8

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