ASTROSAT CZTI

Data Quality Report

Orbit 19782

Creation date: 2024-06-27T18:06:57.577915
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_9000002958_19782cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19782cztM0_level2_quad_clean.evt
Size (bytes)487,791,36068,546,880
Size465.2 MB 65.4 MB
Events in quadrant A3,390,211417,374
Events in quadrant B3,536,212418,137
Events in quadrant C3,957,689395,214
Events in quadrant D3,450,291394,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014323154
B014919155
C016160237
D014698195

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6450921.426357%
B64561522.354399%
C64412904.502406%
D64471141.768264%

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 7567 6497 15 15 0.20% 0.23%
B 7567 6496 55 55 0.73% 0.85%
C 7567 6487 116 116 1.53% 1.79%
D 7568 6492 61 61 0.81% 0.94%

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 0 23 129919 789.46 811 794 163.6
A 6 16 127686 775.81 811 794 163.6
A 0 226 15689 91.07 811 794 163.6
B 7 220 302953 1989.41 802 783 151.9
B 0 197 30125 193.18 802 783 151.9
B 0 190 22561 143.38 802 783 151.9
C 3 233 817579 4618.3 760 764 176.9
C 14 238 125647 706.09 760 764 176.9
C 7 247 33093 182.79 760 764 176.9
D 1 52 291991 1533.17 780 756 190.0
D 7 96 83035 433.15 780 756 190.0
D 12 218 63624 330.96 780 756 190.0

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