ASTROSAT CZTI

Data Quality Report

Orbit 14595

Creation date: 2024-06-27T16:57:17.983340
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/AS1G08_055T02_9000002148_14595cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14595cztM0_level2_quad_clean.evt
Size (bytes)743,253,120107,314,560
Size708.8 MB 102.3 MB
Events in quadrant A9,682,209655,435
Events in quadrant B3,769,065695,638
Events in quadrant C4,151,916686,499
Events in quadrant D4,380,085669,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342244
B0163293
C0170043
D0185443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77955797.427838%
B77952052.629891%
C77951251.603592%
D77953184.079538%

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 8341 7799 8 8 0.10% 0.10%
B 8341 7800 1 1 0.01% 0.01%
C 8341 7800 1 1 0.01% 0.01%
D 8341 7799 162 162 1.94% 2.08%

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 23 5628846 29839.7 922 900 188.6
A 0 226 339918 1797.49 922 900 188.6
A 1 162 88373 463.79 922 900 188.6
B 0 214 27576 146.25 940 917 182.3
B 0 230 25037 132.32 940 917 182.3
B 12 111 22647 119.21 940 917 182.3
C 3 233 535613 2495.2 918 921 214.3
C 8 128 19795 88.08 918 921 214.3
C 8 112 8415 34.97 918 921 214.3
D 10 199 667704 3095.94 903 880 215.4
D 12 110 211741 978.99 903 880 215.4
D 2 234 29622 133.44 903 880 215.4

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