ASTROSAT CZTI

Data Quality Report

Orbit 47897

Creation date: 2024-08-06T11:43:26.171140
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/AS1A13_053T01_9000006370_47897cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47897cztM0_level2_quad_clean.evt
Size (bytes)494,657,28095,883,840
Size471.7 MB 91.4 MB
Events in quadrant A6,107,533649,572
Events in quadrant B2,756,425683,014
Events in quadrant C2,644,926664,042
Events in quadrant D6,333,293485,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225361
B0125641
C0123391
D0232371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60311752.901675%
B6032570.944960%
C6032240.397878%
D6032131421.783820%

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 7136 6032 48 48 0.67% 0.80%
B 7137 6033 18 18 0.25% 0.30%
C 7137 6033 7 7 0.10% 0.12%
D 7137 6033 1122 1122 15.72% 18.60%

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 3453341 24970.59 658 642 138.3
A 7 3 106565 766.06 658 642 138.3
A 3 137 7483 49.48 658 642 138.3
B 5 255 96371 735.83 663 641 130.1
B 12 111 16254 120.01 663 641 130.1
B 11 111 15140 111.45 663 641 130.1
C 12 2 25182 155.37 668 670 157.8
C 1 3 4539 24.52 668 670 157.8
C 13 61 4379 23.51 668 670 157.8
D 12 2 2222604 15077.05 595 576 147.4
D 2 37 1289417 8745.13 595 576 147.4
D 2 249 293102 1984.87 595 576 147.4

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