ASTROSAT CZTI

Data Quality Report

Orbit 20170406_G07_086T01_9000001142_level2

Creation date: 2017-09-23T15:29:11.614223
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/AS1G07_086T01_9000001142cztM0_level2.evt modeM0/AS1G07_086T01_9000001142cztM0_level2_quad_clean.evt
Size (bytes)3,302,328,960633,804,480
Size3.1 GB 604.4 MB
Events in quadrant A23,198,9313,974,438
Events in quadrant B26,084,3014,020,685
Events in quadrant C22,575,0973,952,366
Events in quadrant D24,769,5973,812,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01029180
B01100490
C01024520
D01093140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010220
B010200
C010220
D010220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501004300.858283%
B500916831.363518%
C500983590.716595%
D500956601.317497%

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 58310 50121 13 13 0.02% 0.03%
B 58310 50121 193 193 0.33% 0.39%
C 58310 50120 5 5 0.01% 0.01%
D 58310 50120 285 285 0.49% 0.57%

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 108554 85.66 5953 5827 1199.2
A 15 234 71746 54.97 5953 5827 1199.2
A 13 248 67256 51.22 5953 5827 1199.2
B 10 16 1541741 1374.91 5977 5839 1117.1
B 0 214 666005 590.97 5977 5839 1117.1
B 11 51 505308 447.12 5977 5839 1117.1
C 5 128 48792 32.33 5773 5793 1330.0
C 13 61 44456 29.07 5773 5793 1330.0
C 8 128 19680 10.44 5773 5793 1330.0
D 1 52 1479435 970.88 5711 5581 1518.1
D 13 105 565979 369.15 5711 5581 1518.1
D 8 230 520895 339.45 5711 5581 1518.1

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