ASTROSAT CZTI

Data Quality Report

Orbit 04290

Creation date: 2024-06-27T14:39:58.817592
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/AS1G05_256T01_9000000538_04290cztM0_level2.evt modeM0/AS1G05_256T01_9000000538_04290cztM0_level2_quad_clean.evt
Size (bytes)648,074,880125,899,200
Size618.1 MB 120.1 MB
Events in quadrant A4,167,944835,206
Events in quadrant B4,614,121813,820
Events in quadrant C5,125,113796,544
Events in quadrant D5,166,738799,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01858578
B01949452
C02096953
D02156264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81571611.973765%
B81581471.801912%
C81583834.694778%
D81572442.991296%

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 8570 8177 64 64 0.75% 0.78%
B 8570 8182 23 23 0.27% 0.28%
C 8570 8180 224 224 2.61% 2.74%
D 8570 8182 82 82 0.96% 1.00%

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 0 199 398587 2111.67 920 899 188.3
A 15 234 131288 692.35 920 899 188.3
A 0 226 47788 248.97 920 899 188.3
B 10 16 398802 2216.52 933 908 179.5
B 14 167 330934 1838.45 933 908 179.5
B 15 204 91732 505.95 933 908 179.5
C 9 144 1556101 7508.47 888 887 207.1
C 9 247 58957 280.36 888 887 207.1
C 10 65 13636 61.55 888 887 207.1
D 2 232 1226772 5674.5 894 865 216.0
D 8 112 76501 350.11 894 865 216.0
D 2 37 65769 300.43 894 865 216.0

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