ASTROSAT CZTI

Data Quality Report

Orbit 51406

Creation date: 2025-03-30T22:08:04.333497
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_001T03_9000006456_51406cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51406cztM0_level2_quad_clean.evt
Size (bytes)601,102,08091,036,800
Size573.3 MB 86.8 MB
Events in quadrant A7,004,461557,860
Events in quadrant B3,389,695670,910
Events in quadrant C7,070,174529,349
Events in quadrant D4,291,145551,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253371
B0144931
C0255252
D0171961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639586913.588741%
B63961512.360851%
C6395108716.997654%
D63952513.924941%

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 7455 6396 730 730 9.79% 11.41%
B 7456 6397 32 32 0.43% 0.50%
C 7455 6396 678 678 9.09% 10.60%
D 7455 6396 185 185 2.48% 2.89%

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 12 250 1167828 7148.1 664 647 163.3
A 15 174 996596 6099.43 664 647 163.3
A 12 3 691055 4228.23 664 647 163.3
B 10 254 182436 1233.2 688 662 147.4
B 5 185 86686 583.61 688 662 147.4
B 6 51 53855 360.87 688 662 147.4
C 15 179 2160676 12372.95 638 631 174.6
C 12 247 774812 4434.58 638 631 174.6
C 12 252 511031 2923.62 638 631 174.6
D 8 176 502132 2697.8 669 644 185.9
D 2 216 370986 1992.28 669 644 185.9
D 10 172 244500 1311.84 669 644 185.9

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