ASTROSAT CZTI

Data Quality Report

Orbit 20170414_A03_009T01_9000001160_level2

Creation date: 2017-09-23T17:08:36.282134
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/AS1A03_009T01_9000001160cztM0_level2.evt modeM0/AS1A03_009T01_9000001160cztM0_level2_quad_clean.evt
Size (bytes)1,344,830,400215,951,040
Size1.3 GB 205.9 MB
Events in quadrant A9,721,6001,362,504
Events in quadrant B9,195,9361,391,356
Events in quadrant C8,450,2681,337,487
Events in quadrant D12,141,7341,205,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404370
B0385710
C0372940
D0481260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180236463.584309%
B180234302.385840%
C180233181.764412%
D1802314818.217278%

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 20923 18023 138 138 0.66% 0.77%
B 20923 18024 11 11 0.05% 0.06%
C 20923 18025 0 0 0.00% 0.00%
D 20923 18024 1005 1005 4.80% 5.58%

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 15 239 902250 2036.6 2217 2174 441.9
A 15 236 168567 376.5 2217 2174 441.9
A 1 162 49527 107.15 2217 2174 441.9
B 0 214 301130 719.58 2232 2180 415.5
B 4 80 58984 136.73 2232 2180 415.5
B 12 111 44010 100.69 2232 2180 415.5
C 13 61 16452 28.79 2165 2176 495.9
C 8 128 7639 11.02 2165 2176 495.9
C 3 202 5537 6.78 2165 2176 495.9
D 1 52 2758910 5233.66 2087 2034 526.8
D 2 14 531957 1006.01 2087 2034 526.8
D 2 152 407046 768.88 2087 2034 526.8

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