ASTROSAT CZTI

Data Quality Report

Orbit 20181014_C04_007T03_9000002436_level2

Creation date: 2018-10-15T17:07:51.455150
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/AS1C04_007T03_9000002436cztM0_level2_bc.evt modeM0/AS1C04_007T03_9000002436cztM0_level2_quad_clean.evt
Size (bytes)1,042,390,080322,479,360
Size994.1 MB 307.5 MB
Events in quadrant A7,845,9092,051,737
Events in quadrant B9,325,7652,038,741
Events in quadrant C6,430,3262,016,811
Events in quadrant D6,280,9061,962,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613630
B0673170
C0550580
D0540880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2467110604.296542%
B2467122969.306473%
C246713961.605123%
D246712881.167362%

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 28667 24670 29 29 0.10% 0.12%
B 28667 24670 255 255 0.89% 1.03%
C 28667 24671 0 0 0.00% 0.00%
D 28667 24672 59 59 0.21% 0.24%

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 15 174 2703119 8999.08 1334 1305 300.2
A 4 2 27942 88.72 1334 1305 300.2
A 12 194 8663 24.51 1334 1305 300.2
B 5 65 2140290 8383.86 1331 1304 255.1
B 10 16 695738 2721.87 1331 1304 255.1
B 3 209 393338 1536.6 1331 1304 255.1
C 3 233 1233759 4041.98 1299 1300 304.9
C 7 247 177188 576.84 1299 1300 304.9
C 8 128 12781 37.65 1299 1300 304.9
D 1 52 519378 1677.9 1315 1269 308.8
D 2 33 348503 1124.52 1315 1269 308.8
D 2 234 111657 357.49 1315 1269 308.8

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