ASTROSAT CZTI

Data Quality Report

Orbit 20201007_T03_243T01_9000003918_level2

Creation date: 2021-01-05T23:15:54.803480
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/AS1T03_243T01_9000003918cztM0_level2_bc.evt modeM0/AS1T03_243T01_9000003918cztM0_level2_quad_clean.evt
Size (bytes)16,164,904,3205,002,577,280
Size15.1 GB 4.7 GB
Events in quadrant A94,839,53232,766,447
Events in quadrant B108,686,84932,708,893
Events in quadrant C81,965,17331,621,720
Events in quadrant D179,218,91329,398,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074900
B074920
C074920
D074940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05730
B05860
C05730
D05860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08022340
B08682700
C07719470
D011313000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36541068631.878164%
B365422140303.839397%
C36550465351.787942%
D365179331259.070894%

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 429028 365787 1299 1299 0.30% 0.36%
B 429028 365771 1079 1079 0.25% 0.29%
C 429027 365965 67 67 0.02% 0.02%
D 429027 365248 8008 8008 1.87% 2.19%

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 8099830 1797.11 21590 21294 4495.3
A 14 235 1077949 235.06 21590 21294 4495.3
A 0 13 895379 194.44 21590 21294 4495.3
B 3 64 20481049 5248.51 21528 21097 3898.2
B 15 33 1391988 351.67 21528 21097 3898.2
B 0 190 836334 209.13 21528 21097 3898.2
C 15 208 1906610 366.73 20300 20501 5143.1
C 14 238 492714 91.82 20300 20501 5143.1
C 2 16 235045 41.72 20300 20501 5143.1
D 1 52 69468570 14618.92 20077 19631 4750.6
D 2 250 7491887 1572.9 20077 19631 4750.6
D 12 1 5772027 1210.87 20077 19631 4750.6

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