ASTROSAT CZTI

Data Quality Report

Orbit 20170705_G07_042T01_9000001360_level2

Creation date: 2017-09-24T09:16:46.188158
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/AS1G07_042T01_9000001360cztM0_level2.evt modeM0/AS1G07_042T01_9000001360cztM0_level2_quad_clean.evt
Size (bytes)4,539,991,680837,547,200
Size4.2 GB 798.7 MB
Events in quadrant A35,875,6275,350,867
Events in quadrant B30,919,5135,393,624
Events in quadrant C29,438,9365,297,783
Events in quadrant D37,055,5355,051,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01476810
B01314050
C01285030
D01513100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012800
B012760
C012780
D012840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226813152.111839%
B623258831.416767%
C623075290.849022%
D6229823153.716010%

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 73709 63099 29 29 0.04% 0.05%
B 73709 63171 55 55 0.07% 0.09%
C 73709 63133 11 11 0.01% 0.02%
D 73709 63142 1554 1554 2.11% 2.46%

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 1 162 2342455 1512.59 7747 7624 1543.6
A 1 178 1228905 791.19 7747 7624 1543.6
A 1 161 1156093 744.02 7747 7624 1543.6
B 10 245 242147 160.71 7755 7576 1459.6
B 4 80 231977 153.74 7755 7576 1459.6
B 12 111 165436 108.15 7755 7576 1459.6
C 13 61 55893 28.14 7512 7580 1716.7
C 9 68 52602 26.23 7512 7580 1716.7
C 14 234 50846 25.2 7512 7580 1716.7
D 1 52 6141448 3306.37 7396 7234 1855.3
D 12 233 858382 458.77 7396 7234 1855.3
D 2 234 388474 205.49 7396 7234 1855.3

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