ASTROSAT CZTI

Data Quality Report

Orbit 20160223_T01_072T04_9000000342_level2

Creation date: 2018-05-17T03:29:59.684508
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/AS1T01_072T04_9000000342cztM0_level2.evt modeM0/AS1T01_072T04_9000000342cztM0_level2_quad_clean.evt
Size (bytes)11,579,261,760736,346,880
Size10.8 GB 702.2 MB
Events in quadrant A59,751,9675,180,888
Events in quadrant B55,306,2105,280,943
Events in quadrant C159,568,8152,111,569
Events in quadrant D70,811,9324,339,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015780
B015780
C015780
D015780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02329890
B02192950
C05305770
D02703270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0150
C0150
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780941253516.051169%
B780421013612.987878%
C782556107278.042298%
D781321646521.073312%

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 91326 78110 10685 10685 11.70% 13.68%
B 91326 78056 9176 9176 10.05% 11.76%
C 91326 78280 52946 52946 57.97% 67.64%
D 91326 78148 15732 15732 17.23% 20.13%

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 15 171 6721244 3660.74 8283 8036 1833.8
A 3 159 5722663 3116.21 8283 8036 1833.8
A 3 254 3650786 1986.41 8283 8036 1833.8
B 3 191 17981064 10113.69 8370 8083 1777.1
B 14 181 627788 348.72 8370 8083 1777.1
B 15 26 427829 236.2 8370 8083 1777.1
C 0 187 42529926 27711.31 3953 3805 1534.6
C 7 111 33584490 21882.2 3953 3805 1534.6
C 7 247 7709639 5021.36 3953 3805 1534.6
D 3 254 8296155 4505.85 7166 6969 1839.6
D 7 223 6736261 3657.92 7166 6969 1839.6
D 3 184 2972321 1611.91 7166 6969 1839.6

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