ASTROSAT CZTI

Data Quality Report

Orbit 25199

Creation date: 2024-06-27T19:14:57.994549
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/AS1A07_027T01_9000003690_25199cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25199cztM0_level2_quad_clean.evt
Size (bytes)833,699,520152,472,960
Size795.1 MB 145.4 MB
Events in quadrant A5,613,8441,000,780
Events in quadrant B5,678,3641,005,584
Events in quadrant C6,287,796934,789
Events in quadrant D6,939,387929,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232490
B0235450
C0256600
D0276810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107831010.936660%
B10784960.890208%
C107842532.346068%
D107842362.188427%

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 13198 10785 1 1 0.01% 0.01%
B 13199 10786 4 4 0.03% 0.04%
C 13199 10786 71 71 0.54% 0.66%
D 13199 10786 171 171 1.30% 1.59%

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 13 170 53754 184.86 1437 1410 283.2
A 13 254 17721 57.6 1437 1410 283.2
A 6 16 16942 54.85 1437 1410 283.2
B 0 190 71109 266.44 1407 1376 261.7
B 10 251 52568 195.6 1407 1376 261.7
B 12 111 30965 113.06 1407 1376 261.7
C 7 247 796921 2608.57 1330 1343 305.0
C 14 238 219542 715.44 1330 1343 305.0
C 0 239 56766 181.72 1330 1343 305.0
D 12 233 741200 2254.04 1373 1336 328.2
D 8 195 604361 1837.15 1373 1336 328.2
D 1 52 151784 458.35 1373 1336 328.2

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