ASTROSAT CZTI

Data Quality Report

Orbit 16946

Creation date: 2024-06-27T17:29:51.508685
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/AS1A05_206T01_9000002518_16946cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16946cztM0_level2_quad_clean.evt
Size (bytes)513,832,320106,093,440
Size490.0 MB 101.2 MB
Events in quadrant A4,302,292684,416
Events in quadrant B3,855,370706,938
Events in quadrant C3,392,062681,152
Events in quadrant D3,543,680660,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174572
B0161262
C0142842
D0152732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68934336.281735%
B68931151.668359%
C6893570.826926%
D6893540.783403%

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 8979 6896 249 249 2.77% 3.61%
B 8979 6896 20 20 0.22% 0.29%
C 8979 6896 0 0 0.00% 0.00%
D 8979 6896 37 37 0.41% 0.54%

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 1148349 7118.6 799 784 161.2
A 12 189 83255 511.59 799 784 161.2
A 0 226 7092 39.13 799 784 161.2
B 15 35 239795 1529.25 825 806 156.3
B 0 229 170511 1085.91 825 806 156.3
B 0 197 85950 544.82 825 806 156.3
C 3 233 144531 767.71 801 807 187.2
C 14 238 123987 657.97 801 807 187.2
C 13 61 5636 25.79 801 807 187.2
D 1 52 311141 1603.13 802 780 193.6
D 10 199 125644 644.97 802 780 193.6
D 2 234 23616 117.96 802 780 193.6

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