ASTROSAT CZTI

Data Quality Report

Orbit 24958

Creation date: 2024-06-27T19:11:57.436183
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_200T01_9000003654_24958cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24958cztM0_level2_quad_clean.evt
Size (bytes)487,270,080130,366,080
Size464.7 MB 124.3 MB
Events in quadrant A3,214,092882,615
Events in quadrant B3,509,261895,506
Events in quadrant C3,294,576856,542
Events in quadrant D4,267,818830,533

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142531
B0149231
C0142761
D0176131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69371341.931671%
B69381271.830499%
C69381171.686365%
D69381031.484578%

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 7262 6938 7 7 0.10% 0.10%
B 7263 6939 6 6 0.08% 0.09%
C 7263 6939 1 1 0.01% 0.01%
D 7263 6939 10 10 0.14% 0.14%

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 6 16 36922 219.04 817 799 164.9
A 11 208 27816 163.82 817 799 164.9
A 13 254 9686 53.89 817 799 164.9
B 0 229 82288 523.76 816 796 155.6
B 4 80 76035 483.57 816 796 155.6
B 15 33 38405 241.72 816 796 155.6
C 14 238 125174 683.06 780 782 182.1
C 7 247 89876 489.24 780 782 182.1
C 3 233 21157 111.88 780 782 182.1
D 1 3 921416 4801.68 789 764 191.7
D 1 52 199155 1034.71 789 764 191.7
D 8 195 110479 572.22 789 764 191.7

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