ASTROSAT CZTI

Data Quality Report

Orbit 20100

Creation date: 2024-06-27T18:11:18.264993
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_180T01_9000002992_20100cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20100cztM0_level2_quad_clean.evt
Size (bytes)566,562,24099,587,520
Size540.3 MB 95.0 MB
Events in quadrant A5,257,527600,015
Events in quadrant B3,917,895673,578
Events in quadrant C3,207,134645,711
Events in quadrant D4,324,490632,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199242
B0160932
C0137572
D0174042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666093314.009009%
B6660781.171171%
C6660781.171171%
D66602553.828829%

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 7645 6660 532 532 6.96% 7.99%
B 7645 6661 8 8 0.10% 0.12%
C 7645 6661 0 0 0.00% 0.00%
D 7645 6661 169 169 2.21% 2.54%

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 14 238 2279619 14972.82 756 742 152.2
A 14 237 42608 275.07 756 742 152.2
A 14 254 11051 67.73 756 742 152.2
B 10 245 645479 4142.74 815 796 155.6
B 4 80 54888 347.6 815 796 155.6
B 12 111 18928 116.52 815 796 155.6
C 14 238 123201 663.75 784 790 184.4
C 3 233 27929 147.16 784 790 184.4
C 13 61 5447 25.25 784 790 184.4
D 1 52 807292 4215.58 787 765 191.3
D 12 218 470323 2454.3 787 765 191.3
D 2 234 32334 165.01 787 765 191.3

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