ASTROSAT CZTI

Data Quality Report

Orbit 20170829_A03_073T01_9000001498_level2

Creation date: 2017-09-24T16:35:31.129677
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_073T01_9000001498cztM0_level2.evt modeM0/AS1A03_073T01_9000001498cztM0_level2_quad_clean.evt
Size (bytes)5,376,507,840966,669,120
Size5.0 GB 921.9 MB
Events in quadrant A35,217,5816,084,304
Events in quadrant B38,679,6186,108,876
Events in quadrant C34,204,3606,175,215
Events in quadrant D49,722,2395,822,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01541220
B01625920
C01528390
D01970080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015210
B015160
C015180
D015180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A742688031.081219%
B7399712631.706826%
C743195280.710451%
D7426518352.470881%

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 86309 75062 91 91 0.11% 0.12%
B 86309 74829 335 335 0.39% 0.45%
C 86309 75072 57 57 0.07% 0.08%
D 86309 74782 1128 1128 1.31% 1.51%

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 5 16 643199 356.66 8892 8724 1778.9
A 8 15 142886 75.42 8892 8724 1778.9
A 0 226 81701 41.02 8892 8724 1778.9
B 4 239 2439466 1468.76 8872 8664 1655.0
B 0 214 609849 363.25 8872 8664 1655.0
B 11 51 491978 292.03 8872 8664 1655.0
C 14 234 180973 87.08 8662 8699 1978.4
C 1 3 140475 66.61 8662 8699 1978.4
C 15 48 69529 30.75 8662 8699 1978.4
D 8 195 5822056 2878.51 8533 8311 2019.7
D 1 20 4339389 2144.41 8533 8311 2019.7
D 2 33 2503091 1235.22 8533 8311 2019.7

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