ASTROSAT CZTI

Data Quality Report

Orbit 13276

Creation date: 2024-06-27T16:38:37.824142
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/AS1A04_167T02_9000001974_13276cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13276cztM0_level2_quad_clean.evt
Size (bytes)951,321,600115,156,800
Size907.3 MB 109.8 MB
Events in quadrant A6,550,605705,366
Events in quadrant B6,742,912685,347
Events in quadrant C4,603,103742,102
Events in quadrant D10,236,144658,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025846
B025947
C025652
D025849

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325996359
B0333676690
C0261895487
D04866811316

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154
B0197
C0155
D0132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100462012.000796%
B100609189.125249%
C10116340.336101%
D9889132713.418950%

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 13911 10317 79 79 0.57% 0.77%
B 13911 10325 577 577 4.15% 5.59%
C 13911 10402 7 7 0.05% 0.07%
D 13911 10092 931 931 6.69% 9.23%

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 15 239 1315748 5572.42 1167 1142 235.9
A 8 15 670505 2837.33 1167 1142 235.9
A 1 162 37818 155.46 1167 1142 235.9
B 4 239 2105481 9974.02 1112 1087 211.0
B 0 244 105103 493.0 1112 1087 211.0
B 3 64 42122 194.49 1112 1087 211.0
C 14 234 42836 156.67 1155 1162 266.0
C 15 208 32145 116.48 1155 1162 266.0
C 6 96 26542 95.41 1155 1162 266.0
D 1 52 4291681 17052.43 1046 1016 251.6
D 13 249 1835152 7289.42 1046 1016 251.6
D 5 222 44115 171.29 1046 1016 251.6

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