ASTROSAT CZTI

Data Quality Report

Orbit 20180123_A04_201T03_9000001862_level2

Creation date: 2018-07-24T14:13:07.986376
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_201T03_9000001862cztM0_level2_bc.evt modeM0/AS1A04_201T03_9000001862cztM0_level2_quad_clean.evt
Size (bytes)1,042,470,720366,511,680
Size994.2 MB 349.5 MB
Events in quadrant A6,266,8462,237,385
Events in quadrant B8,135,5462,288,283
Events in quadrant C6,062,0082,263,137
Events in quadrant D8,959,1672,152,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0653900
B0726460
C0647150
D0732460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314127302.323953%
B3141312293.912393%
C314134861.547130%
D314128882.826945%

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 33594 31414 2 2 0.01% 0.01%
B 33594 31414 40 40 0.12% 0.13%
C 33594 31417 1 1 0.00% 0.00%
D 33594 31414 59 59 0.18% 0.19%

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 102105 298.35 1534 1496 337.2
A 1 162 100330 293.09 1534 1496 337.2
A 13 248 93053 271.51 1534 1496 337.2
B 4 239 1432388 4812.76 1549 1508 297.3
B 0 214 156473 521.22 1549 1508 297.3
B 0 205 116594 387.09 1549 1508 297.3
C 3 233 63210 185.0 1517 1491 333.6
C 15 208 27360 77.54 1517 1491 333.6
C 14 234 14362 38.58 1517 1491 333.6
D 1 52 1821838 5190.63 1506 1445 350.7
D 11 176 344809 979.06 1506 1445 350.7
D 8 195 287995 817.06 1506 1445 350.7

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