ASTROSAT CZTI

Data Quality Report

Orbit 37770

Creation date: 2024-06-27T21:44:13.280226
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/AS1A11_106T02_9000005344_37770cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37770cztM0_level2_quad_clean.evt
Size (bytes)448,323,84065,917,440
Size427.6 MB 62.9 MB
Events in quadrant A2,947,436408,059
Events in quadrant B3,221,936400,917
Events in quadrant C2,663,527417,255
Events in quadrant D4,385,724399,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120473
B0130882
C0111342
D0165722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5285180.340587%
B52852895.468307%
C5285520.983917%
D52852294.333018%

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 7048 5286 14 14 0.20% 0.26%
B 7048 5286 244 244 3.46% 4.62%
C 7048 5286 42 42 0.60% 0.79%
D 7048 5286 149 149 2.11% 2.82%

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 10 83 352147 2961.18 595 583 118.7
A 15 222 214466 1801.51 595 583 118.7
A 9 143 49737 414.01 595 583 118.7
B 5 255 529719 4823.82 575 561 109.7
B 4 81 153170 1391.19 575 561 109.7
B 0 229 78663 711.98 575 561 109.7
C 15 214 226056 1662.91 584 588 135.6
C 0 10 144731 1063.11 584 588 135.6
C 14 254 8379 57.46 584 588 135.6
D 12 235 1426679 10161.66 577 561 140.3
D 2 249 232744 1654.4 577 561 140.3
D 13 249 160952 1142.85 577 561 140.3

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