ASTROSAT CZTI

Data Quality Report

Orbit 20180918_T02_110T01_9000002376_level2

Creation date: 2018-09-20T12:50:47.254368
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_110T01_9000002376cztM0_level2_bc.evt modeM0/AS1T02_110T01_9000002376cztM0_level2_quad_clean.evt
Size (bytes)3,238,796,1601,189,967,040
Size3.0 GB 1.1 GB
Events in quadrant A20,137,9107,749,030
Events in quadrant B23,407,8067,671,958
Events in quadrant C19,377,6627,318,922
Events in quadrant D28,913,9647,017,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018680
B018680
C018680
D018680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01949560
B02065720
C01930460
D02364760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9169412781.393766%
B9169415371.676227%
C9169412731.388313%
D9169457656.287216%

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 107620 91682 50 50 0.05% 0.05%
B 107620 91682 23 23 0.02% 0.03%
C 107620 91680 3 3 0.00% 0.00%
D 107620 91684 97 97 0.09% 0.11%

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 741294 712.68 4795 4711 1033.5
A 12 96 445502 426.49 4795 4711 1033.5
A 9 143 248833 236.2 4795 4711 1033.5
B 0 189 1153714 1279.27 4792 4671 898.2
B 7 220 935212 1036.01 4792 4671 898.2
B 4 173 674895 746.19 4792 4671 898.2
C 3 233 1504376 1415.34 4567 4543 1059.7
C 0 207 148750 136.08 4567 4543 1059.7
C 7 247 69904 61.68 4567 4543 1059.7
D 7 38 6301343 5823.8 4615 4444 1081.2
D 12 218 2877504 2657.2 4615 4444 1081.2
D 5 222 411586 376.55 4615 4444 1081.2

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