ASTROSAT CZTI

Data Quality Report

Orbit 17641

Creation date: 2024-06-27T17:38:59.725228
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_118T02_9000002612_17641cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17641cztM0_level2_quad_clean.evt
Size (bytes)539,752,320105,356,160
Size514.7 MB 100.5 MB
Events in quadrant A3,426,766683,562
Events in quadrant B3,565,459699,318
Events in quadrant C3,751,504661,926
Events in quadrant D5,108,122638,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150642
B0153672
C0155722
D0202662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288340.466520%
B7288600.823271%
C7289981.344492%
D72892924.006036%

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 9348 7290 0 0 0.00% 0.00%
B 9348 7290 3 3 0.03% 0.04%
C 9349 7291 0 0 0.00% 0.00%
D 9349 7290 123 123 1.32% 1.69%

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 4 2 7856 38.67 890 871 180.6
A 0 226 7662 37.59 890 871 180.6
A 12 194 6586 31.64 890 871 180.6
B 0 230 41353 240.11 891 870 168.6
B 12 111 20330 115.42 891 870 168.6
B 11 111 17468 98.44 891 870 168.6
C 3 233 263666 1318.15 854 861 199.4
C 14 238 132866 662.1 854 861 199.4
C 5 218 25380 122.98 854 861 199.4
D 1 52 1541847 7507.43 845 821 205.3
D 13 189 323931 1574.1 845 821 205.3
D 12 235 36576 174.19 845 821 205.3

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