ASTROSAT CZTI

Data Quality Report

Orbit 08746

Creation date: 2024-06-27T15:36:39.591364
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/AS1G07_013T02_9000001216_08746cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08746cztM0_level2_quad_clean.evt
Size (bytes)519,811,200110,399,040
Size495.7 MB 105.3 MB
Events in quadrant A3,727,931707,151
Events in quadrant B3,975,545713,993
Events in quadrant C3,406,876716,025
Events in quadrant D4,122,641684,203

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161103
B0170516
C0155454
D0175235

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7505730.972685%
B75032263.012128%
C7504550.732942%
D7504951.265991%

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 8425 7506 10 10 0.12% 0.13%
B 8425 7507 85 85 1.01% 1.13%
C 8425 7508 7 7 0.08% 0.09%
D 8425 7508 72 72 0.85% 0.96%

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 378314 2179.48 853 833 173.2
A 5 16 47957 272.08 853 833 173.2
A 15 174 14308 77.8 853 833 173.2
B 10 16 500996 3049.47 862 838 164.0
B 4 48 51429 308.45 862 838 164.0
B 0 214 31772 188.61 862 838 164.0
C 1 16 60547 305.69 845 850 195.3
C 14 234 21219 104.3 845 850 195.3
C 8 128 11236 53.18 845 850 195.3
D 1 52 592928 2910.37 837 809 203.5
D 2 152 123008 600.63 837 809 203.5
D 7 71 92349 449.94 837 809 203.5

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