ASTROSAT CZTI

Data Quality Report

Orbit 10911

Creation date: 2024-06-27T16:05:31.557766
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/AS1A04_055T02_9000001576_10911cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10911cztM0_level2_quad_clean.evt
Size (bytes)499,066,56085,440,960
Size475.9 MB 81.5 MB
Events in quadrant A3,682,097541,965
Events in quadrant B4,535,857540,695
Events in quadrant C3,125,649541,691
Events in quadrant D3,335,503515,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149172
B0176681
C0134761
D0139231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64121061.653150%
B64124707.330006%
C6412671.044916%
D6412691.076107%

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 7592 6412 16 16 0.21% 0.25%
B 7592 6412 227 227 2.99% 3.54%
C 7592 6412 0 0 0.00% 0.00%
D 7592 6412 8 8 0.11% 0.12%

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 13 251 449144 2687.99 826 811 166.8
A 15 174 41251 242.46 826 811 166.8
A 0 226 7657 41.05 826 811 166.8
B 4 239 1270974 8309.96 807 788 152.9
B 0 214 62382 402.97 807 788 152.9
B 0 219 20205 127.03 807 788 152.9
C 13 61 6007 28.37 800 804 183.4
C 12 4 3331 13.78 800 804 183.4
C 14 234 3110 12.58 800 804 183.4
D 8 195 93276 484.11 799 775 191.1
D 13 104 45711 235.17 799 775 191.1
D 1 52 39440 202.35 799 775 191.1

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