ASTROSAT CZTI

Data Quality Report

Orbit 50171

Creation date: 2025-01-07T09:35:16.806918
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/AS1C09_003T01_9000006442_50171cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50171cztM0_level2_quad_clean.evt
Size (bytes)907,922,88064,247,040
Size865.9 MB 61.3 MB
Events in quadrant A5,467,328516,567
Events in quadrant B3,106,583604,800
Events in quadrant C12,586,161153,375
Events in quadrant D11,990,889256,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203771
B0135191
C0414478
D0397331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592061210.337838%
B5921911.536903%
C5920447675.608108%
D5920325054.898649%

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 6924 5919 536 536 7.74% 9.06%
B 6925 5920 53 53 0.77% 0.90%
C 6924 5919 4173 4173 60.27% 70.50%
D 6924 5919 3474 3474 50.17% 58.69%

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 98 896193 6003.14 594 581 149.2
A 10 253 665709 4458.25 594 581 149.2
A 8 8 541383 3624.91 594 581 149.2
B 10 247 118177 897.95 609 588 131.0
B 4 216 114777 871.99 609 588 131.0
B 0 155 96490 732.34 609 588 131.0
C 15 213 2470818 24487.21 354 353 100.9
C 4 111 1808945 17926.73 354 353 100.9
C 15 232 1689264 16740.46 354 353 100.9
D 15 185 3285411 24938.91 456 440 131.7
D 12 6 904778 6865.57 456 440 131.7
D 8 192 734270 5571.11 456 440 131.7

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