ASTROSAT CZTI

Data Quality Report

Orbit 50347

Creation date: 2025-01-18T14:03:03.361934
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_50347cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50347cztM0_level2_quad_clean.evt
Size (bytes)792,394,56083,505,600
Size755.7 MB 79.6 MB
Events in quadrant A5,663,544563,122
Events in quadrant B4,241,633673,196
Events in quadrant C8,099,574461,085
Events in quadrant D10,825,394378,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211822
B0170072
C0285542
D0366352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648385113.126639%
B64833265.028536%
C6483189529.230295%
D6483251338.762918%

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 7627 6482 769 769 10.08% 11.86%
B 7628 6483 185 185 2.43% 2.85%
C 7628 6483 1660 1660 21.76% 25.61%
D 7628 6483 2726 2726 35.74% 42.05%

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 7 206 1692424 10229.95 670 657 165.4
A 4 3 254592 1535.52 670 657 165.4
A 10 253 198004 1193.34 670 657 165.4
B 1 238 399929 2698.42 694 671 148.0
B 8 128 185308 1247.88 694 671 148.0
B 10 44 172586 1161.9 694 671 148.0
C 0 208 3767104 21773.0 601 596 173.0
C 15 199 248986 1435.86 601 596 173.0
C 1 3 185303 1067.73 601 596 173.0
D 7 61 5036151 31593.8 558 540 159.4
D 2 165 1040594 6525.38 558 540 159.4
D 7 126 389947 2443.17 558 540 159.4

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