ASTROSAT CZTI

Data Quality Report

Orbit 20161103_G06_086T01_9000000774_level2

Creation date: 2018-05-17T19:21:11.768368
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_086T01_9000000774cztM0_level2.evt modeM0/AS1G06_086T01_9000000774cztM0_level2_quad_clean.evt
Size (bytes)13,331,298,2403,342,024,000
Size12.4 GB 3.1 GB
Events in quadrant A105,473,36622,070,359
Events in quadrant B96,429,77622,928,120
Events in quadrant C102,213,85122,068,968
Events in quadrant D86,923,47521,273,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03340
C03390
D03410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039280
B039740
C039580
D039160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04482380
B04164560
C04412390
D04020380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18761685434.553450%
B18764637271.986187%
C18800255572.955820%
D18786026181.393591%

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 309541 190286 6268 6268 2.02% 3.29%
B 309541 190323 1668 1668 0.54% 0.88%
C 309541 190588 4033 4033 1.30% 2.12%
D 309541 190485 1319 1319 0.43% 0.69%

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 15 234 18603631 4476.54 20820 20377 4151.3
A 13 34 2768109 661.9 20820 20377 4151.3
A 4 2 994222 234.59 20820 20377 4151.3
B 3 64 6322202 1565.54 21429 20943 4025.0
B 15 204 1904342 467.93 21429 20943 4025.0
B 0 214 1137147 277.32 21429 20943 4025.0
C 1 241 13119709 2811.69 20428 20483 4658.8
C 9 247 8342688 1786.32 20428 20483 4658.8
C 1 16 363746 73.68 20428 20483 4658.8
D 2 63 3158703 633.2 20483 19829 4957.2
D 2 206 1073400 212.53 20483 19829 4957.2
D 1 239 1048371 207.49 20483 19829 4957.2

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