ASTROSAT CZTI

Data Quality Report

Orbit 20161102_G06_157T01_9000000772_level2

Creation date: 2017-09-18T22:44:45.011288
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/AS1G06_157T01_9000000772cztM0_level2.evt modeM0/AS1G06_157T01_9000000772cztM0_level2_quad_clean.evt
Size (bytes)6,122,658,240940,567,680
Size5.7 GB 897.0 MB
Events in quadrant A40,436,5486,095,185
Events in quadrant B34,973,0055,718,671
Events in quadrant C56,782,3175,752,771
Events in quadrant D48,152,1105,750,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01724590
B01562050
C02227880
D01973960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01230
C01250
D01250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015520
B015560
C015580
D015520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7511117602.343199%
B753419221.223769%
C75397951212.615887%
D7518437534.991754%

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 94001 77113 665 665 0.71% 0.86%
B 94001 77325 23 23 0.02% 0.03%
C 94001 77384 7336 7336 7.80% 9.48%
D 94001 77199 3106 3106 3.30% 4.02%

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 4 2 5149766 3012.2 8479 8287 1706.9
A 13 251 2191973 1279.34 8479 8287 1706.9
A 8 192 328739 187.74 8479 8287 1706.9
B 0 219 320305 190.2 8687 8472 1639.5
B 15 204 277013 163.79 8687 8472 1639.5
B 15 255 266229 157.22 8687 8472 1639.5
C 9 247 25471638 14009.67 7932 7962 1817.6
C 9 54 135372 70.1 7932 7962 1817.6
C 1 16 98822 49.99 7932 7962 1817.6
D 1 20 11901361 5969.5 8215 7971 1992.4
D 2 63 3136497 1570.26 8215 7971 1992.4
D 10 172 1220976 608.83 8215 7971 1992.4

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