ASTROSAT CZTI

Data Quality Report

Orbit 49640

Creation date: 2024-12-03T18:47:45.120531
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/AS1T05_233T01_9000006438_49640cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49640cztM0_level2_quad_clean.evt
Size (bytes)5,213,217,600146,361,600
Size4.9 GB 139.6 MB
Events in quadrant A62,513,4511,569
Events in quadrant B28,626,5232,439,213
Events in quadrant C32,160,1723,363
Events in quadrant D67,550,40289,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02045605
B01039677
C01148235
D02195335

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275662755699.963723%
B27565517318.766552%
C275652754899.938328%
D275662679497.199449%

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 31870 27565 19902 19902 62.45% 72.20%
B 31870 27566 3883 3883 12.18% 14.09%
C 31869 27564 3357 3357 10.53% 12.18%
D 31870 27565 25086 25086 78.71% 91.01%

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 99 24954508 88802.7 732 691 281.0
A 10 83 11073883 39405.97 732 691 281.0
A 3 130 5583115 19866.07 732 691 281.0
B 3 232 4059353 6982.14 2766 2685 581.0
B 4 170 4020876 6915.91 2766 2685 581.0
B 4 206 3822446 6574.39 2766 2685 581.0
C 15 180 9885551 72348.97 177 160 136.6
C 15 181 5301502 38799.34 177 160 136.6
C 15 163 3472426 25412.74 177 160 136.6
D 15 40 20638149 31067.88 1017 910 664.3
D 7 45 10601731 15958.77 1017 910 664.3
D 7 61 4784861 7201.89 1017 910 664.3

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