ASTROSAT CZTI

Data Quality Report

Orbit 20171005_G08_036T01_9000001584_level2

Creation date: 2017-10-18T19:21:38.228283
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/AS1G08_036T01_9000001584cztM0_level2.evt modeM0/AS1G08_036T01_9000001584cztM0_level2_quad_clean.evt
Size (bytes)1,732,060,800261,823,680
Size1.6 GB 249.7 MB
Events in quadrant A11,529,6631,630,045
Events in quadrant B14,830,0061,636,521
Events in quadrant C9,637,0751,651,631
Events in quadrant D14,978,4081,500,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490620
B0584550
C0443870
D0598140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219273831.746705%
B2192910904.970587%
C21929840.383054%
D2193013115.978112%

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 24211 21934 154 154 0.64% 0.70%
B 24211 21934 623 623 2.57% 2.84%
C 24211 21934 0 0 0.00% 0.00%
D 24211 21933 917 917 3.79% 4.18%

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 8 5 952670 1824.98 2533 2472 520.7
A 15 223 427174 815.7 2533 2472 520.7
A 15 239 156966 296.73 2533 2472 520.7
B 4 239 4214842 8813.4 2520 2456 478.0
B 4 81 378291 786.34 2520 2456 478.0
B 0 219 137941 283.47 2520 2456 478.0
C 13 61 18123 27.47 2460 2467 569.9
C 8 128 16267 24.21 2460 2467 569.9
C 8 222 11030 15.02 2460 2467 569.9
D 13 152 3474328 6004.45 2384 2313 578.2
D 1 52 1387950 2396.3 2384 2313 578.2
D 8 195 330664 567.84 2384 2313 578.2

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