ASTROSAT CZTI

Data Quality Report

Orbit 20200503_A07_027T02_9000003640_level2

Creation date: 2020-05-14T20:29:15.822400
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_027T02_9000003640cztM0_level2_bc.evt modeM0/AS1A07_027T02_9000003640cztM0_level2_quad_clean.evt
Size (bytes)2,738,203,200895,242,240
Size2.6 GB 853.8 MB
Events in quadrant A16,068,8775,777,738
Events in quadrant B14,478,4015,888,391
Events in quadrant C22,125,8795,576,994
Events in quadrant D25,957,9705,544,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012840
B012840
C012840
D012840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01387470
B01339590
C01601620
D01702860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310612652.004564%
B631068701.378633%
C6310534065.397354%
D6310518142.874574%

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 75425 63108 266 266 0.35% 0.42%
B 75425 63109 14 14 0.02% 0.02%
C 75425 63107 1044 1044 1.38% 1.65%
D 75425 63109 300 300 0.40% 0.48%

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 6 16 2560671 3487.96 3442 3391 733.2
A 4 2 96607 127.14 3442 3391 733.2
A 13 254 88889 116.61 3442 3391 733.2
B 7 205 348799 536.99 3473 3389 643.2
B 0 189 250039 383.45 3473 3389 643.2
B 0 190 203186 310.61 3473 3389 643.2
C 7 247 8132762 10450.89 3312 3307 777.9
C 2 16 1151060 1475.5 3312 3307 777.9
C 7 220 52304 62.99 3312 3307 777.9
D 12 218 4206829 5272.36 3432 3321 797.3
D 1 52 3824293 4792.56 3432 3321 797.3
D 8 195 3725477 4668.62 3432 3321 797.3

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