ASTROSAT CZTI

Data Quality Report

Orbit 46605

Creation date: 2024-06-27T23:25:20.890021
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_092T09_9000006238_46605cztM0_level2.fits modeM0/AS1A13_092T09_9000006238_46605cztM0_level2_quad_clean.evt
Size (bytes)1,914,396,480383,987,520
Size1.8 GB 366.2 MB
Events in quadrant A23,717,5822,345,019
Events in quadrant B13,030,5962,839,138
Events in quadrant C10,380,7512,829,215
Events in quadrant D22,051,1612,109,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0846734
B0538294
C0473845
D0808614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21845248311.366445%
B218468143.726083%
C218452231.020829%
D21845350816.058595%

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 26055 21849 1803 1803 6.92% 8.25%
B 26056 21850 354 354 1.36% 1.62%
C 26055 21849 114 114 0.44% 0.52%
D 26055 21849 2943 2943 11.30% 13.47%

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 10344486 17414.69 2731 2688 593.9
A 15 235 1793209 3015.08 2731 2688 593.9
A 0 247 766184 1285.66 2731 2688 593.9
B 0 189 866478 1568.56 2713 2653 550.7
B 0 198 484007 874.06 2713 2653 550.7
B 15 201 182888 327.28 2713 2653 550.7
C 12 249 123280 190.93 2597 2614 632.0
C 14 254 45041 67.13 2597 2614 632.0
C 12 2 32069 46.61 2597 2614 632.0
D 1 52 6795910 9651.42 2582 2499 703.9
D 12 233 2380686 3378.7 2582 2499 703.9
D 2 249 758918 1074.65 2582 2499 703.9

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