ASTROSAT CZTI

Data Quality Report

Orbit 38447

Creation date: 2024-06-27T21:52:52.449832
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/AS1A12_018T01_9000005386_38447cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38447cztM0_level2_quad_clean.evt
Size (bytes)330,338,88095,313,600
Size315.0 MB 90.9 MB
Events in quadrant A2,913,248672,554
Events in quadrant B2,891,984667,041
Events in quadrant C2,511,614631,654
Events in quadrant D3,521,010563,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117253
B0116792
C0102422
D0135932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500860.119808%
B50081042.076677%
C500830.059904%
D50083246.469649%

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 7072 5009 2 2 0.03% 0.04%
B 7072 5009 76 76 1.07% 1.52%
C 7072 5009 2 2 0.03% 0.04%
D 7072 5009 245 245 3.46% 4.89%

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 10 83 377650 3124.88 604 593 120.7
A 15 223 169028 1395.92 604 593 120.7
A 13 6 17223 137.82 604 593 120.7
B 4 232 226481 2036.97 589 573 110.9
B 8 3 130398 1170.61 589 573 110.9
B 0 183 90954 814.95 589 573 110.9
C 15 214 213764 1616.1 579 582 131.9
C 14 254 11822 85.21 579 582 131.9
C 0 10 10513 75.29 579 582 131.9
D 13 249 732729 5338.22 574 560 137.2
D 2 249 221468 1610.63 574 560 137.2
D 10 118 83083 601.67 574 560 137.2

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