ASTROSAT CZTI

Data Quality Report

Orbit 20216

Creation date: 2024-06-27T18:12:33.392915
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/AS1A05_117T01_9000002998_20216cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20216cztM0_level2_quad_clean.evt
Size (bytes)478,753,92094,066,560
Size456.6 MB 89.7 MB
Events in quadrant A3,173,146609,723
Events in quadrant B3,362,612614,823
Events in quadrant C3,292,258593,917
Events in quadrant D4,230,401577,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135062
B0141222
C0136132
D0169602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6492280.431300%
B6492580.893407%
C6492620.955022%
D64921672.572397%

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 7517 6493 7 7 0.09% 0.11%
B 7517 6493 10 10 0.13% 0.15%
C 7517 6493 0 0 0.00% 0.00%
D 7517 6493 130 130 1.73% 2.00%

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 14 238 45554 274.75 802 785 162.9
A 4 2 24149 143.39 802 785 162.9
A 13 252 11672 66.81 802 785 162.9
B 7 220 102066 659.56 800 779 153.6
B 10 245 39915 254.85 800 779 153.6
B 0 198 20910 131.09 800 779 153.6
C 14 238 121604 657.07 780 786 183.9
C 3 233 112629 608.26 780 786 183.9
C 1 16 16418 85.02 780 786 183.9
D 1 52 1124653 5899.42 781 757 190.5
D 7 238 36604 188.16 781 757 190.5
D 7 38 35180 180.69 781 757 190.5

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