ASTROSAT CZTI

Data Quality Report

Orbit 46575

Creation date: 2024-06-27T23:24:56.995483
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/AS1C07_001T10_9000006232_46575cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46575cztM0_level2_quad_clean.evt
Size (bytes)632,969,280108,653,760
Size603.6 MB 103.6 MB
Events in quadrant A6,325,170738,382
Events in quadrant B3,179,928792,280
Events in quadrant C2,896,895772,567
Events in quadrant D10,511,968520,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232092
B0141522
C0136122
D0359292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66732533.791398%
B6673460.689345%
C6673100.149858%
D6673193729.027424%

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 7842 6673 120 120 1.53% 1.80%
B 7842 6672 13 13 0.17% 0.19%
C 7842 6672 0 0 0.00% 0.00%
D 7842 6672 2003 2003 25.54% 30.02%

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 10 83 3345621 22348.54 727 713 149.7
A 15 235 125129 831.27 727 713 149.7
A 13 254 11872 74.56 727 713 149.7
B 0 245 66589 461.79 740 717 142.6
B 0 189 50652 350.06 740 717 142.6
B 3 112 41837 288.27 740 717 142.6
C 3 233 18018 101.83 732 736 169.7
C 12 250 12931 71.86 732 736 169.7
C 13 61 4964 24.91 732 736 169.7
D 13 138 6186879 37781.15 652 631 163.7
D 1 52 890296 5433.43 652 631 163.7
D 13 249 403337 2459.44 652 631 163.7

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