ASTROSAT CZTI

Data Quality Report

Orbit 27750

Creation date: 2024-06-27T19:43:53.130238
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/AS1A10_002T05_9000004000_27750cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27750cztM0_level2_quad_clean.evt
Size (bytes)432,950,40095,509,440
Size412.9 MB 91.1 MB
Events in quadrant A3,116,360623,683
Events in quadrant B3,167,030630,266
Events in quadrant C3,260,795608,586
Events in quadrant D3,140,925591,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132100
B0133820
C0134880
D0135270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277340.541660%
B6277530.844352%
C62771031.640911%
D6277260.414211%

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 7467 6278 1 1 0.01% 0.02%
B 7467 6278 1 1 0.01% 0.02%
C 7467 6277 0 0 0.00% 0.00%
D 7467 6278 7 7 0.09% 0.11%

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 0 13 24663 150.32 795 780 158.9
A 8 192 14824 88.39 795 780 158.9
A 13 254 11789 69.29 795 780 158.9
B 0 190 42959 283.99 792 772 148.5
B 4 200 22643 147.23 792 772 148.5
B 12 111 17915 115.4 792 772 148.5
C 14 238 125136 692.43 774 780 179.6
C 3 233 114903 635.45 774 780 179.6
C 13 61 5162 24.4 774 780 179.6
D 1 52 131041 713.42 774 754 182.6
D 2 250 64013 346.39 774 754 182.6
D 2 234 27632 147.18 774 754 182.6

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