ASTROSAT CZTI

Data Quality Report

Orbit 20170820_G07_011T03_9000001476_level2

Creation date: 2017-09-21T16:09:15.383862
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_011T03_9000001476cztM0_level2.evt modeM0/AS1G07_011T03_9000001476cztM0_level2_quad_clean.evt
Size (bytes)1,854,149,760336,718,080
Size1.7 GB 321.1 MB
Events in quadrant A12,260,2632,153,589
Events in quadrant B13,744,6522,154,451
Events in quadrant C11,925,5242,153,222
Events in quadrant D16,523,3542,005,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05200
C05200
D05240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521930
B0564080
C0519100
D0652720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A252181560.618606%
B251213831.524621%
C252431430.566494%
D250564141.652299%

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 31744 25692 2 2 0.01% 0.01%
B 31740 25633 127 127 0.40% 0.50%
C 31743 25699 0 0 0.00% 0.00%
D 31742 25384 233 233 0.73% 0.92%

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 8 15 64896 98.55 3151 3092 627.1
A 0 226 29075 41.43 3151 3092 627.1
A 12 194 25906 36.38 3151 3092 627.1
B 10 247 664793 1133.66 3129 3060 583.7
B 11 51 287281 486.92 3129 3060 583.7
B 0 219 222682 376.25 3129 3060 583.7
C 0 207 43671 58.77 3035 3057 691.0
C 13 61 22477 28.1 3035 3057 691.0
C 14 67 19207 23.37 3035 3057 691.0
D 1 52 2211667 2849.99 2977 2928 775.0
D 8 195 2006065 2584.7 2977 2928 775.0
D 13 104 152412 192.88 2977 2928 775.0

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