ASTROSAT CZTI

Data Quality Report

Orbit 50778

Creation date: 2025-02-16T18:00:08.973966
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/AS1C07_001T01_9000006450_50778cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50778cztM0_level2_quad_clean.evt
Size (bytes)2,292,984,000206,576,640
Size2.1 GB 197.0 MB
Events in quadrant A15,180,2331,545,536
Events in quadrant B9,126,0931,758,789
Events in quadrant C34,569,225741,879
Events in quadrant D24,603,932955,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0574133
B0402583
C01152953
D0856763

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1814713917.665179%
B181474872.683639%
C181481044157.532510%
D18148672937.078466%

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 19453 18151 928 928 4.77% 5.11%
B 19453 18151 92 92 0.47% 0.51%
C 19454 18152 8471 8471 43.54% 46.67%
D 19453 18151 3565 3565 18.33% 19.64%

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 12 80 3342726 7210.27 1885 1841 463.4
A 5 17 807596 1738.97 1885 1841 463.4
A 4 249 730865 1573.37 1885 1841 463.4
B 4 206 353507 867.69 1906 1838 405.3
B 5 185 198353 484.87 1906 1838 405.3
B 7 0 140081 341.09 1906 1838 405.3
C 15 157 12656226 33070.94 1332 1313 382.7
C 5 10 4477023 11696.32 1332 1313 382.7
C 15 230 2449784 6398.56 1332 1313 382.7
D 8 242 8086787 18638.33 1536 1482 433.8
D 8 241 1856028 4275.12 1536 1482 433.8
D 8 176 1536528 3538.61 1536 1482 433.8

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