ASTROSAT CZTI

Data Quality Report

Orbit 20190226_A05_144T02_9000002734_level2

Creation date: 2019-02-27T09:49:15.424556
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/AS1A05_144T02_9000002734cztM0_level2_bc.evt modeM0/AS1A05_144T02_9000002734cztM0_level2_quad_clean.evt
Size (bytes)1,786,907,520611,377,920
Size1.7 GB 583.1 MB
Events in quadrant A14,038,4113,878,900
Events in quadrant B14,378,4144,034,133
Events in quadrant C8,576,1383,869,076
Events in quadrant D14,131,8363,724,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01116690
B01111750
C0901930
D01064360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4385529836.801961%
B4385530416.934215%
C438556961.587048%
D4385511492.619998%

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 49010 43847 171 171 0.35% 0.39%
B 49010 43846 415 415 0.85% 0.95%
C 49010 43852 4 4 0.01% 0.01%
D 49010 43850 108 108 0.22% 0.25%

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 13 5086244 10850.96 2131 2089 468.5
A 14 238 368556 782.14 2131 2089 468.5
A 15 174 202745 428.25 2131 2089 468.5
B 10 245 2815784 6774.52 2190 2130 415.3
B 15 222 2103669 5059.94 2190 2130 415.3
B 7 220 678381 1628.23 2190 2130 415.3
C 3 233 292285 574.78 2128 2111 504.8
C 0 207 61480 117.6 2128 2111 504.8
C 9 54 20871 37.16 2128 2111 504.8
D 7 238 2286028 4523.62 2145 2068 504.9
D 13 168 1243233 2458.25 2145 2068 504.9
D 8 230 629543 1242.78 2145 2068 504.9

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