ASTROSAT CZTI

Data Quality Report

Orbit 46260

Creation date: 2024-06-27T23:20:56.954662
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/AS1A13_071T10_9000006192_46260cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46260cztM0_level2_quad_clean.evt
Size (bytes)532,785,600114,350,400
Size508.1 MB 109.1 MB
Events in quadrant A6,388,069738,713
Events in quadrant B3,688,003791,610
Events in quadrant C3,362,411769,905
Events in quadrant D5,733,544668,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237472
B0156672
C0152793
D0220452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70912984.202510%
B7091911.283317%
C70901031.452750%
D70905597.884344%

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 7641 7092 17 17 0.22% 0.24%
B 7640 7090 8 8 0.10% 0.11%
C 7640 7090 56 56 0.73% 0.79%
D 7640 7090 449 449 5.88% 6.33%

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 10 83 3329036 20619.64 773 755 161.4
A 7 3 55543 339.43 773 755 161.4
A 13 254 11937 69.28 773 755 161.4
B 3 112 490821 3178.91 785 757 154.2
B 5 255 32002 202.68 785 757 154.2
B 5 250 26012 163.82 785 757 154.2
C 12 2 252463 1364.55 783 787 184.4
C 1 3 23141 121.2 783 787 184.4
C 0 207 19464 101.26 783 787 184.4
D 1 52 1541085 8081.65 758 733 190.6
D 2 249 459935 2409.26 758 733 190.6
D 5 171 360815 1889.21 758 733 190.6

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