ASTROSAT CZTI

Data Quality Report

Orbit 45925

Creation date: 2024-06-27T23:17:47.101358
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_071T03_9000006142_45925cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45925cztM0_level2_quad_clean.evt
Size (bytes)510,416,64092,871,360
Size486.8 MB 88.6 MB
Events in quadrant A4,985,681624,716
Events in quadrant B6,227,286598,453
Events in quadrant C2,828,303627,709
Events in quadrant D4,407,752559,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188611
B0225361
C0123751
D0171681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57451051.827676%
B574670712.304212%
C5746290.504699%
D57462153.741733%

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 6830 5746 11 11 0.16% 0.19%
B 6831 5747 378 378 5.53% 6.58%
C 6831 5747 18 18 0.26% 0.31%
D 6831 5747 193 193 2.83% 3.36%

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 2512339 18880.64 635 620 133.0
A 2 79 11177 79.36 635 620 133.0
A 3 137 6937 47.49 635 620 133.0
B 10 246 1902060 15833.3 612 594 120.1
B 3 112 1817077 15125.65 612 594 120.1
B 4 158 32577 266.32 612 594 120.1
C 9 54 161741 1077.0 635 639 149.6
C 14 254 149065 992.26 635 639 149.6
C 12 2 18973 122.57 635 639 149.6
D 11 241 1225335 7770.41 624 606 157.6
D 2 37 346249 2192.96 624 606 157.6
D 2 249 175878 1112.03 624 606 157.6

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