ASTROSAT CZTI

Data Quality Report

Orbit 20180313_T02_013T01_9000001976_level2

Creation date: 2018-07-02T16:56:17.887253
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/AS1T02_013T01_9000001976cztM0_level2_bc.evt modeM0/AS1T02_013T01_9000001976cztM0_level2_quad_clean.evt
Size (bytes)3,672,054,720959,693,760
Size3.4 GB 915.2 MB
Events in quadrant A19,963,6556,946,172
Events in quadrant B31,595,0063,394,665
Events in quadrant C17,665,0796,951,507
Events in quadrant D36,566,1156,324,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01746470
B03083630
C01670180
D02327990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7930510981.384528%
B792803304441.680121%
C793057520.948238%
D7930548676.137066%

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 91816 79309 17 17 0.02% 0.02%
B 91816 74842 867 867 0.94% 1.16%
C 91816 79309 18 18 0.02% 0.02%
D 91816 79307 785 785 0.85% 0.99%

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 15 2783397 2907.31 4261 4171 955.9
A 15 69 364373 376.8 4261 4171 955.9
A 1 162 202499 207.47 4261 4171 955.9
B 4 239 19252409 36009.24 2801 2738 534.6
B 10 245 290539 538.37 2801 2738 534.6
B 3 64 253224 468.57 2801 2738 534.6
C 15 208 975454 1022.59 4217 4202 949.8
C 14 234 174588 179.39 4217 4202 949.8
C 6 96 25623 22.55 4217 4202 949.8
D 1 52 6683859 6757.18 4118 3980 988.6
D 13 104 4668804 4718.81 4118 3980 988.6
D 5 222 3046124 3077.35 4118 3980 988.6

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