ASTROSAT CZTI

Data Quality Report

Orbit 20180908_G08_066T02_9000002346_level2

Creation date: 2018-09-10T11:23:02.699534
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/AS1G08_066T02_9000002346cztM0_level2_bc.evt modeM0/AS1G08_066T02_9000002346cztM0_level2_quad_clean.evt
Size (bytes)953,265,600351,342,720
Size909.1 MB 335.1 MB
Events in quadrant A7,983,9622,139,853
Events in quadrant B6,477,6742,212,191
Events in quadrant C6,249,2462,101,249
Events in quadrant D6,057,5632,075,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680960
B0645560
C0636310
D0634590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06220
B06220
C06220
D06220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A307246452.099336%
B307246242.030986%
C307246522.122120%
D307244461.451634%

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 32410 30727 2 2 0.01% 0.01%
B 32410 30727 5 5 0.02% 0.02%
C 32410 30726 0 0 0.00% 0.00%
D 32410 30723 1 1 0.00% 0.00%

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 2125142 6389.63 1511 1474 332.4
A 15 174 18250 50.47 1511 1474 332.4
A 9 143 18035 49.83 1511 1474 332.4
B 0 189 142234 481.48 1539 1498 292.3
B 4 173 88419 297.37 1539 1498 292.3
B 4 216 85085 285.97 1539 1498 292.3
C 3 233 489743 1408.54 1472 1453 346.7
C 7 247 65000 183.31 1472 1453 346.7
C 0 207 15253 39.81 1472 1453 346.7
D 2 234 117772 329.04 1508 1447 353.5
D 2 152 60158 166.07 1508 1447 353.5
D 13 172 57622 158.9 1508 1447 353.5

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