ASTROSAT CZTI

Data Quality Report

Orbit 20160925_G05_214T01_9000000684_level2

Creation date: 2018-05-17T17:26:09.254728
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/AS1G05_214T01_9000000684cztM0_level2.evt modeM0/AS1G05_214T01_9000000684cztM0_level2_quad_clean.evt
Size (bytes)15,825,139,2002,048,607,360
Size14.7 GB 1.9 GB
Events in quadrant A83,423,26112,835,316
Events in quadrant B87,480,01713,012,208
Events in quadrant C88,530,66012,933,691
Events in quadrant D208,036,59211,238,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02730
B02730
C02730
D02730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03688050
B03757840
C03788030
D07400430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035740
B035720
C035740
D035740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17551528111.601573%
B17549331521.796083%
C17547320211.151744%
D1754823049817.379560%

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 203398 175619 290 290 0.14% 0.17%
B 203398 175600 322 322 0.16% 0.18%
C 203398 175578 249 249 0.12% 0.14%
D 203398 175583 32562 32562 16.01% 18.55%

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 0 50 1529798 359.03 20807 20368 4204.2
A 15 174 749873 173.52 20807 20368 4204.2
A 13 6 413796 93.58 20807 20368 4204.2
B 15 204 1791447 441.73 21107 20629 4008.9
B 10 16 850248 206.95 21107 20629 4008.9
B 0 219 726285 176.02 21107 20629 4008.9
C 1 16 7559896 1598.94 20306 20430 4715.3
C 9 247 1462765 305.88 20306 20430 4715.3
C 14 67 227424 43.9 20306 20430 4715.3
D 7 237 82573543 17591.87 19192 18610 4692.8
D 2 63 41515578 8842.71 19192 18610 4692.8
D 2 33 2284341 482.81 19192 18610 4692.8

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