ASTROSAT CZTI

Data Quality Report

Orbit 27816

Creation date: 2024-06-27T19:44:47.422262
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/AS1A10_048T08_9000004020_27816cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27816cztM0_level2_quad_clean.evt
Size (bytes)453,427,20093,859,200
Size432.4 MB 89.5 MB
Events in quadrant A2,926,631629,031
Events in quadrant B3,584,847623,494
Events in quadrant C2,917,401599,144
Events in quadrant D3,903,914579,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125530
B0144860
C0124690
D0155040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5875641.089362%
B58752303.914894%
C5875921.565957%
D58752804.765957%

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 6885 5875 12 12 0.17% 0.20%
B 6885 5875 140 140 2.03% 2.38%
C 6885 5875 1 1 0.01% 0.02%
D 6885 5875 262 262 3.81% 4.46%

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 13 248 51597 336.49 745 731 151.2
A 13 254 9104 55.39 745 731 151.2
A 3 137 6938 41.06 745 731 151.2
B 10 245 579712 4196.4 722 706 138.0
B 3 64 51990 371.69 722 706 138.0
B 15 32 45676 325.92 722 706 138.0
C 14 238 112460 680.21 697 701 164.3
C 3 233 58692 352.95 697 701 164.3
C 15 208 27801 164.94 697 701 164.3
D 1 52 1101790 6463.7 705 687 170.4
D 2 250 56969 330.39 705 687 170.4
D 12 233 42916 247.89 705 687 170.4

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