ASTROSAT CZTI

Data Quality Report

Orbit 18078

Creation date: 2024-06-27T17:44:46.544329
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/AS1A06_006T01_9000002684_18078cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18078cztM0_level2_quad_clean.evt
Size (bytes)507,202,560116,138,880
Size483.7 MB 110.8 MB
Events in quadrant A3,935,223793,590
Events in quadrant B3,492,349799,153
Events in quadrant C3,274,806754,337
Events in quadrant D4,239,196739,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157661
B0143921
C0136581
D0168925

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61782473.998058%
B61781402.266106%
C61781692.735513%
D61772193.545410%

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 7448 6178 70 70 0.94% 1.13%
B 7448 6178 11 11 0.15% 0.18%
C 7448 6179 0 0 0.00% 0.00%
D 7447 6177 90 90 1.21% 1.46%

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 4 2 640420 3820.62 850 837 167.4
A 15 174 26240 151.74 850 837 167.4
A 0 226 7764 41.38 850 837 167.4
B 7 220 103901 653.23 840 821 157.8
B 3 64 34066 210.68 840 821 157.8
B 4 216 27695 170.3 840 821 157.8
C 14 238 126929 688.27 794 802 183.3
C 3 233 30797 163.68 794 802 183.3
C 0 207 11113 56.27 794 802 183.3
D 7 238 483863 2419.21 818 794 199.7
D 11 176 335864 1678.03 818 794 199.7
D 5 222 137869 686.47 818 794 199.7

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