ASTROSAT CZTI

Data Quality Report

Orbit 20180521_A04_130T03_9000002108_level2

Creation date: 2018-05-22T17:50:00.102549
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/AS1A04_130T03_9000002108cztM0_level2_bc.evt modeM0/AS1A04_130T03_9000002108cztM0_level2_quad_clean.evt
Size (bytes)960,563,520303,791,040
Size916.1 MB 289.7 MB
Events in quadrant A5,941,5431,912,263
Events in quadrant B6,938,9461,893,983
Events in quadrant C6,499,7451,841,345
Events in quadrant D7,990,0221,821,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0541770
B0592750
C0543630
D0611960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05160
C05160
D05160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251646912.745986%
B2516411134.422985%
C251644271.696869%
D251647112.825465%

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 30562 25163 5 5 0.02% 0.02%
B 30562 25160 67 67 0.22% 0.27%
C 30562 25166 0 0 0.00% 0.00%
D 30562 25164 29 29 0.09% 0.12%

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 274637 926.74 1339 1307 294.9
A 12 189 259487 875.37 1339 1307 294.9
A 13 210 199294 671.28 1339 1307 294.9
B 0 229 776446 3061.7 1325 1290 253.2
B 10 16 350558 1379.53 1325 1290 253.2
B 10 245 260309 1023.07 1325 1290 253.2
C 3 233 1442111 5091.49 1288 1267 283.0
C 10 22 11638 36.65 1288 1267 283.0
C 13 61 7659 22.59 1288 1267 283.0
D 5 222 1046122 3449.81 1313 1276 302.9
D 12 110 1010798 3333.18 1313 1276 302.9
D 13 122 285320 937.84 1313 1276 302.9

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