ASTROSAT CZTI

Data Quality Report

Orbit 27473

Creation date: 2024-06-27T19:40:25.480896
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/AS1T03_249T01_9000003934_27473cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27473cztM0_level2_quad_clean.evt
Size (bytes)427,867,20089,674,560
Size408.0 MB 85.5 MB
Events in quadrant A3,059,769588,374
Events in quadrant B3,407,572597,665
Events in quadrant C3,073,207561,688
Events in quadrant D3,011,166550,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125050
B0137480
C0125960
D0126470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977410.685963%
B5978661.104048%
C5978781.304784%
D5978290.485112%

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 7292 5978 0 0 0.00% 0.00%
B 7293 5979 3 3 0.04% 0.05%
C 7293 5978 0 0 0.00% 0.00%
D 7293 5979 6 6 0.08% 0.10%

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 10128 59.04 792 777 158.4
A 6 16 7242 40.82 792 777 158.4
A 3 137 6981 39.17 792 777 158.4
B 3 64 304365 2070.62 784 768 146.6
B 12 111 17715 115.58 784 768 146.6
B 11 111 15712 101.92 784 768 146.6
C 14 238 124231 704.95 753 758 175.2
C 2 16 10385 54.96 753 758 175.2
C 13 61 5249 25.64 753 758 175.2
D 1 52 101082 570.78 757 738 175.8
D 2 234 21201 116.4 757 738 175.8
D 15 145 20433 112.03 757 738 175.8

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