ASTROSAT CZTI

Data Quality Report

Orbit 40147

Creation date: 2024-06-27T22:12:55.292080
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_042T01_9000005522_40147cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40147cztM0_level2_quad_clean.evt
Size (bytes)686,675,52074,197,440
Size654.9 MB 70.8 MB
Events in quadrant A3,102,783633,851
Events in quadrant B2,699,433649,066
Events in quadrant C14,571,90923,064
Events in quadrant D4,591,328534,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127212
B0121101
C0472061
D0176211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582160.103075%
B5821110.188971%
C5821567297.440302%
D58214527.764989%

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 7134 5822 6 6 0.08% 0.10%
B 7134 5822 3 3 0.04% 0.05%
C 7133 5820 5613 5613 78.69% 96.44%
D 7134 5822 453 453 6.35% 7.78%

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 435840 3417.28 622 609 127.4
A 12 189 199493 1561.57 622 609 127.4
A 2 79 50794 394.04 622 609 127.4
B 4 251 120388 988.03 619 600 121.2
B 0 190 48639 396.23 619 600 121.2
B 4 171 45394 369.47 619 600 121.2
C 9 187 13336739 206101.19 275 277 64.7
C 15 214 115724 1784.11 275 277 64.7
C 9 203 20396 310.92 275 277 64.7
D 12 0 1362639 9369.32 588 571 145.4
D 12 227 369845 2540.14 588 571 145.4
D 13 249 330556 2269.88 588 571 145.4

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