ASTROSAT CZTI

Data Quality Report

Orbit 20151106_P01_118T02_9000000082_level2

Creation date: 2016-09-06T17:59:27.648461
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/AS1P01_118T02_9000000082cztM0_level2_bc.evt modeM0/AS1P01_118T02_9000000082cztM0_level2_quad_clean.evt
Size (bytes)1,840,714,560527,633,280
Size1.7 GB 503.2 MB
Events in quadrant A11,094,0223,096,531
Events in quadrant B12,083,9833,130,721
Events in quadrant C10,524,2953,105,279
Events in quadrant D18,384,3222,965,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010980
B010980
C010980
D010980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02302800
B02322010
C02127710
D02341050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536724770.888732%
B536792230.415432%
C536701870.348426%
D5367411812.200320%

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 79384 53685 97 97 0.12% 0.18%
B 79384 53688 28 28 0.04% 0.05%
C 79384 53684 77 77 0.10% 0.14%
D 79384 53676 405 405 0.51% 0.75%

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 15 17 1070926 2261.33 2262 2206 472.6
A 13 160 229042 479.97 2262 2206 472.6
A 0 149 213649 447.4 2262 2206 472.6
B 7 221 935777 2289.34 2322 2251 407.8
B 4 250 773774 1892.05 2322 2251 407.8
B 4 206 443563 1082.26 2322 2251 407.8
C 3 159 896898 1898.63 2248 2206 471.2
C 1 1 240669 506.04 2248 2206 471.2
C 15 241 237900 500.17 2248 2206 471.2
D 1 4 3527529 7288.48 2211 2150 483.7
D 13 216 1250488 2580.85 2211 2150 483.7
D 12 237 1056114 2179.0 2211 2150 483.7

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