ASTROSAT CZTI

Data Quality Report

Orbit 03859

Creation date: 2024-06-27T14:34:28.849893
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/AS1G05_189T01_9000000492_03859cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03859cztM0_level2_quad_clean.evt
Size (bytes)774,763,20070,407,360
Size738.9 MB 67.1 MB
Events in quadrant A3,139,466468,841
Events in quadrant B3,145,482464,787
Events in quadrant C11,835,555371,488
Events in quadrant D4,928,263396,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136612
B0136641
C0393981
D0189871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139290.472390%
B6139661.075094%
C6139308850.301352%
D613991414.888418%

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 7094 6140 4 4 0.06% 0.07%
B 7094 6140 27 27 0.38% 0.44%
C 7094 6139 3244 3244 45.73% 52.84%
D 7093 6138 890 890 12.55% 14.50%

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 15 234 277809 1895.22 717 702 146.2
A 8 15 93549 635.01 717 702 146.2
A 13 251 7574 47.0 717 702 146.2
B 14 167 179295 1281.75 718 701 139.3
B 15 204 140799 1005.47 718 701 139.3
B 0 187 17557 120.97 718 701 139.3
C 2 53 9366244 65241.27 612 614 143.6
C 1 241 40100 275.06 612 614 143.6
C 7 141 14489 96.65 612 614 143.6
D 13 137 2145811 13307.9 649 631 161.2
D 8 112 277210 1715.79 649 631 161.2
D 13 223 33194 202.01 649 631 161.2

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
Veto Counter