ASTROSAT CZTI

Data Quality Report

Orbit 20170209_G06_087T02_9000001016_level2

Creation date: 2017-09-23T02:43:10.682895
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_087T02_9000001016cztM0_level2.evt modeM0/AS1G06_087T02_9000001016cztM0_level2_quad_clean.evt
Size (bytes)1,375,205,760242,228,160
Size1.3 GB 231.0 MB
Events in quadrant A9,535,2831,472,445
Events in quadrant B9,939,3991,506,657
Events in quadrant C9,443,6131,499,197
Events in quadrant D11,318,8271,421,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428320
B0434610
C0428590
D0483140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208642821.351610%
B208643311.586465%
C208641620.776457%
D208634502.156929%

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 22206 20870 0 0 0.00% 0.00%
B 22206 20870 16 16 0.07% 0.08%
C 22206 20870 11 11 0.05% 0.05%
D 22206 20868 221 221 1.00% 1.06%

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 3 1 40692 76.22 2456 2397 502.4
A 0 226 23939 42.88 2456 2397 502.4
A 12 194 22362 39.74 2456 2397 502.4
B 0 214 259664 537.98 2477 2413 478.2
B 12 111 49261 97.97 2477 2413 478.2
B 11 111 39364 77.27 2477 2413 478.2
C 8 128 35634 59.43 2393 2396 559.2
C 9 68 27473 44.84 2393 2396 559.2
C 13 61 18907 29.52 2393 2396 559.2
D 2 216 678087 1160.4 2373 2297 582.4
D 13 105 485406 829.54 2373 2297 582.4
D 12 233 457779 782.11 2373 2297 582.4

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