ASTROSAT CZTI

Data Quality Report

Orbit 39648

Creation date: 2024-06-27T22:07:17.014903
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/AS1A12_018T01_9000005488_39648cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39648cztM0_level2_quad_clean.evt
Size (bytes)496,336,32098,735,040
Size473.3 MB 94.2 MB
Events in quadrant A4,206,226687,346
Events in quadrant B2,873,014695,398
Events in quadrant C4,897,494635,173
Events in quadrant D5,978,351594,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163173
B0120192
C0181112
D0215572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5393831.539032%
B5393771.427777%
C53933746.934916%
D53934017.435565%

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 7366 5394 35 35 0.48% 0.65%
B 7366 5394 54 54 0.73% 1.00%
C 7366 5394 318 318 4.32% 5.90%
D 7366 5394 448 448 6.08% 8.31%

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 1162754 9274.38 630 618 125.3
A 10 83 465300 3708.38 630 618 125.3
A 9 143 100290 795.43 630 618 125.3
B 5 172 234475 1980.61 622 606 118.1
B 10 246 115196 970.45 622 606 118.1
B 5 255 52754 441.64 622 606 118.1
C 9 187 1227080 8789.31 606 610 139.5
C 15 208 1032696 7396.28 606 610 139.5
C 15 214 221612 1583.78 606 610 139.5
D 12 227 2857977 19351.39 609 593 147.7
D 13 249 326491 2207.11 609 593 147.7
D 12 233 122915 828.41 609 593 147.7

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