ASTROSAT CZTI

Data Quality Report

Orbit 15847

Creation date: 2024-06-27T17:14:17.570186
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_143T01_9000002344_15847cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15847cztM0_level2_quad_clean.evt
Size (bytes)465,001,92086,783,040
Size443.5 MB 82.8 MB
Events in quadrant A3,911,070549,763
Events in quadrant B3,472,263566,991
Events in quadrant C3,222,175543,362
Events in quadrant D3,051,777530,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158413
B0145822
C0136322
D0132362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62672043.255146%
B62671151.835009%
C62671021.627573%
D6267440.702090%

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 8658 6270 76 76 0.88% 1.21%
B 8658 6270 16 16 0.18% 0.26%
C 8658 6270 0 0 0.00% 0.00%
D 8658 6270 0 0 0.00% 0.00%

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 504525 3098.21 809 793 162.6
A 15 157 279049 1711.42 809 793 162.6
A 9 143 8222 45.69 809 793 162.6
B 10 245 89051 569.34 822 803 155.0
B 4 173 84037 536.99 822 803 155.0
B 5 236 24412 152.32 822 803 155.0
C 14 238 123703 667.94 789 797 184.0
C 3 233 9568 47.67 789 797 184.0
C 10 22 9560 47.62 789 797 184.0
D 2 234 23774 118.33 798 776 194.4
D 2 69 12959 62.68 798 776 194.4
D 7 223 8998 42.3 798 776 194.4

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