ASTROSAT CZTI

Data Quality Report

Orbit 20170125_A02_073T02_9000000982_level2

Creation date: 2017-09-22T22:50:06.828474
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/AS1A02_073T02_9000000982cztM0_level2.evt modeM0/AS1A02_073T02_9000000982cztM0_level2_quad_clean.evt
Size (bytes)3,416,610,240566,055,360
Size3.2 GB 539.8 MB
Events in quadrant A22,667,0533,481,395
Events in quadrant B24,200,3593,552,045
Events in quadrant C22,523,0043,499,637
Events in quadrant D30,829,1083,302,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0997320
B01034920
C01000810
D01250680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0840
C0840
D0840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09820
B09820
C09820
D09820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A482177321.518137%
B482177821.621835%
C482174941.024535%
D4821617113.548615%

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 68178 48221 24 24 0.04% 0.05%
B 68178 48219 45 45 0.07% 0.09%
C 68178 48221 10 10 0.01% 0.02%
D 68177 48218 975 975 1.43% 2.02%

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 14 111 243661 202.13 5783 5664 1177.5
A 0 226 54677 41.63 5783 5664 1177.5
A 12 194 52209 39.53 5783 5664 1177.5
B 0 214 685651 616.48 5817 5687 1103.0
B 0 219 395248 353.19 5817 5687 1103.0
B 4 81 217762 192.28 5817 5687 1103.0
C 9 68 467443 353.5 5626 5644 1306.4
C 13 250 92218 66.27 5626 5644 1306.4
C 13 61 44105 29.44 5626 5644 1306.4
D 8 195 3470518 2548.42 5572 5401 1359.7
D 2 216 2605966 1912.59 5572 5401 1359.7
D 2 14 1523094 1116.19 5572 5401 1359.7

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