ASTROSAT CZTI

Data Quality Report

Orbit 30920

Creation date: 2024-06-27T20:21:11.682488
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/AS1C06_007T01_9000004470_30920cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30920cztM0_level2_quad_clean.evt
Size (bytes)634,458,24072,155,520
Size605.1 MB 68.8 MB
Events in quadrant A3,307,388460,227
Events in quadrant B6,565,199454,051
Events in quadrant C3,666,288426,043
Events in quadrant D5,235,104389,503

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136052
B0236892
C0147802
D0197942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6510640.983103%
B65103785.806452%
C65104146.359447%
D65115728.785133%

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 7745 6510 0 0 0.00% 0.00%
B 7745 6510 141 141 1.82% 2.17%
C 7745 6510 6 6 0.08% 0.09%
D 7746 6511 474 474 6.12% 7.28%

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 13 254 12298 67.36 855 840 170.1
A 3 137 8157 43.02 855 840 170.1
A 0 226 7315 38.07 855 840 170.1
B 6 159 1927564 12293.68 844 825 156.7
B 6 36 1210957 7721.32 844 825 156.7
B 5 172 46961 294.37 844 825 156.7
C 14 238 225436 1226.13 795 801 183.2
C 14 254 136329 739.76 795 801 183.2
C 3 233 112094 607.48 795 801 183.2
D 12 233 1168763 6245.15 786 767 187.0
D 12 218 329289 1756.57 786 767 187.0
D 8 195 297636 1587.33 786 767 187.0

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