ASTROSAT CZTI

Data Quality Report

Orbit 39484

Creation date: 2024-06-27T22:05:10.207737
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_001T02_9000005486_39484cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39484cztM0_level2_quad_clean.evt
Size (bytes)1,065,980,160245,295,360
Size1016.6 MB 233.9 MB
Events in quadrant A11,171,6861,661,540
Events in quadrant B8,960,3881,622,138
Events in quadrant C8,849,5781,605,134
Events in quadrant D9,268,7321,460,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434124
B0374083
C0360753
D0386203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156174322.766216%
B156177184.597554%
C156172621.677659%
D156175373.438561%

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 19856 15620 310 310 1.56% 1.98%
B 19856 15620 565 565 2.85% 3.62%
C 19856 15620 207 207 1.04% 1.33%
D 19856 15620 416 416 2.10% 2.66%

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 15 222 2505511 7354.14 1683 1650 340.5
A 10 83 1126453 3303.68 1683 1650 340.5
A 15 174 555740 1627.43 1683 1650 340.5
B 5 255 2026526 6381.88 1658 1610 317.3
B 5 172 323853 1015.61 1658 1610 317.3
B 0 199 44114 133.96 1658 1610 317.3
C 15 208 1018151 2672.91 1647 1657 380.3
C 15 214 650227 1705.44 1647 1657 380.3
C 9 187 614161 1610.6 1647 1657 380.3
D 13 249 806165 1995.5 1638 1589 403.2
D 12 0 759852 1880.64 1638 1589 403.2
D 2 249 693593 1716.3 1638 1589 403.2

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