ASTROSAT CZTI

Data Quality Report

Orbit 20220908_C07_001T11_9000005336_level2

Creation date: 2022-09-13T12:43:11.294089
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_001T11_9000005336cztM0_level2_bc.evt modeM0/AS1C07_001T11_9000005336cztM0_level2_quad_clean.evt
Size (bytes)2,877,341,7601,061,187,840
Size2.7 GB 1012.0 MB
Events in quadrant A15,197,2717,212,181
Events in quadrant B18,088,3447,241,138
Events in quadrant C15,347,9687,271,233
Events in quadrant D34,543,1246,421,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01236360
B01404590
C01237210
D02059420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02250
B02250
C02250
D02250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011920
B011920
C011920
D011920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582571530.262629%
B5825711892.040956%
C582573720.638550%
D58257884215.177575%

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 80808 58270 13 13 0.02% 0.02%
B 80808 58252 60 60 0.07% 0.10%
C 80808 58257 31 31 0.04% 0.05%
D 80808 58248 1425 1425 1.76% 2.45%

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 2819974 4378.32 2888 2845 643.4
A 15 222 452704 699.16 2888 2845 643.4
A 12 189 234524 360.07 2888 2845 643.4
B 4 80 1440364 2467.33 2901 2844 582.6
B 5 172 1065917 1824.64 2901 2844 582.6
B 5 255 817539 1398.33 2901 2844 582.6
C 15 214 2459239 3676.58 2861 2840 668.1
C 14 254 977833 1459.31 2861 2840 668.1
C 0 10 583291 868.78 2861 2840 668.1
D 12 235 12725338 19412.97 2679 2600 655.4
D 2 249 3036001 4628.51 2679 2600 655.4
D 13 249 1936881 2951.42 2679 2600 655.4

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