ASTROSAT CZTI

Data Quality Report

Orbit 15477

Creation date: 2024-06-27T17:09:08.382882
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/AS1T02_082T01_9000002286_15477cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15477cztM0_level2_quad_clean.evt
Size (bytes)542,053,440110,615,040
Size516.9 MB 105.5 MB
Events in quadrant A3,535,339725,135
Events in quadrant B4,132,084722,108
Events in quadrant C3,694,319700,968
Events in quadrant D4,547,277681,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155243
B0171282
C0158442
D0185342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7471550.736180%
B74711321.766832%
C7471941.258198%
D74711812.422701%

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 7692 7473 3 3 0.04% 0.04%
B 7692 7473 31 31 0.40% 0.41%
C 7692 7473 4 4 0.05% 0.05%
D 7692 7473 141 141 1.83% 1.89%

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 9 143 24876 131.27 898 880 182.8
A 13 248 22983 120.91 898 880 182.8
A 15 157 14311 73.47 898 880 182.8
B 10 245 145325 841.64 896 873 171.6
B 7 220 110757 640.23 896 873 171.6
B 0 189 93027 536.93 896 873 171.6
C 3 233 240218 1200.35 849 854 199.4
C 14 238 131027 652.79 849 854 199.4
C 13 61 6534 28.48 849 854 199.4
D 2 33 419851 1986.8 857 830 210.9
D 1 52 358165 1694.31 857 830 210.9
D 5 222 153704 724.86 857 830 210.9

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