ASTROSAT CZTI

Data Quality Report

Orbit 20201129_A10_065T03_9000004040_level2

Creation date: 2021-01-07T04:58:12.819078
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/AS1A10_065T03_9000004040cztM0_level2_bc.evt modeM0/AS1A10_065T03_9000004040cztM0_level2_quad_clean.evt
Size (bytes)6,170,129,2802,086,724,160
Size5.7 GB 1.9 GB
Events in quadrant A36,077,39813,670,602
Events in quadrant B35,652,02613,557,098
Events in quadrant C37,097,02612,744,589
Events in quadrant D67,515,25012,639,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031540
B031560
C031540
D031540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02390
B02390
C02390
D02390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03321220
B03339430
C03456690
D04430720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15463223011.488049%
B15463125161.627099%
C15463237942.453567%
D15463170924.586402%

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 178962 154641 449 449 0.25% 0.29%
B 178962 154630 31 31 0.02% 0.02%
C 178962 154632 170 170 0.09% 0.11%
D 178962 154618 1142 1142 0.64% 0.74%

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 1506794 793.79 8907 8769 1887.2
A 13 254 208402 105.78 8907 8769 1887.2
A 8 192 125622 61.92 8907 8769 1887.2
B 10 245 1149421 678.48 8916 8704 1681.3
B 4 52 123541 68.3 8916 8704 1681.3
B 0 230 105995 57.87 8916 8704 1681.3
C 2 16 1962327 1002.63 8434 8435 1948.8
C 3 233 1520065 775.68 8434 8435 1948.8
C 10 22 1126770 573.87 8434 8435 1948.8
D 1 52 19439519 10097.9 8578 8359 1924.3
D 8 195 10512370 5458.68 8578 8359 1924.3
D 7 80 3455185 1791.23 8578 8359 1924.3

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