ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T02_9000001948_level2

Creation date: 2018-07-06T10:09:21.123036
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/AS1T02_012T02_9000001948cztM0_level2_bc.evt modeM0/AS1T02_012T02_9000001948cztM0_level2_quad_clean.evt
Size (bytes)200,226,24055,834,560
Size191.0 MB 53.2 MB
Events in quadrant A1,380,937348,081
Events in quadrant B1,450,305337,124
Events in quadrant C903,566345,548
Events in quadrant D1,995,879324,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111650
B0117850
C097170
D0135800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4772501.047779%
B47722745.741827%
C4772240.502934%
D47723236.768650%

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 5508 4773 0 0 0.00% 0.00%
B 5508 4773 58 58 1.05% 1.22%
C 5508 4773 0 0 0.00% 0.00%
D 5508 4773 65 65 1.18% 1.36%

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 0 23 209420 3924.64 230 224 53.3
A 12 189 192433 3605.95 230 224 53.3
A 15 222 32523 605.95 230 224 53.3
B 4 239 480405 10274.4 226 220 46.7
B 3 64 23893 506.53 226 220 46.7
B 3 209 14821 312.41 226 220 46.7
C 15 208 13018 242.17 226 222 52.8
C 12 4 2513 43.36 226 222 52.8
C 14 234 1392 22.14 226 222 52.8
D 1 52 661140 12172.8 222 213 54.3
D 1 7 245662 4520.62 222 213 54.3
D 10 157 121558 2234.9 222 213 54.3

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