ASTROSAT CZTI

Data Quality Report

Orbit 36806

Creation date: 2024-06-27T21:31:53.698522
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/AS1A11_075T01_9000005244_36806cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36806cztM0_level2_quad_clean.evt
Size (bytes)833,783,04054,990,720
Size795.2 MB 52.4 MB
Events in quadrant A3,154,538397,089
Events in quadrant B14,400,992104,774
Events in quadrant C2,954,057399,084
Events in quadrant D4,366,816373,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127843
B0466312
C0121682
D0168022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547220.396611%
B5547541097.530197%
C5547490.883360%
D55471703.064720%

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 7160 5548 3 3 0.04% 0.05%
B 7159 5546 5313 5313 74.21% 95.80%
C 7160 5548 33 33 0.46% 0.59%
D 7160 5548 186 186 2.60% 3.35%

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 14 235 374027 2844.77 639 625 131.3
A 10 83 252528 1919.13 639 625 131.3
A 9 143 16453 120.59 639 625 131.3
B 12 1 13344430 321743.52 211 207 41.5
B 5 172 77018 1852.0 211 207 41.5
B 4 171 32551 779.85 211 207 41.5
C 15 214 238752 1624.78 622 626 146.6
C 14 254 167471 1138.42 622 626 146.6
C 0 10 103477 701.77 622 626 146.6
D 12 227 707853 4688.97 619 602 150.8
D 1 20 644006 4265.67 619 602 150.8
D 13 249 191887 1268.19 619 602 150.8

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