ASTROSAT CZTI

Data Quality Report

Orbit 20170720_G05_218T01_9000001394_level2

Creation date: 2021-08-27T18:17:38.994120
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G05_218T01_9000001394cztM0_level2_bc.evt modeM0/AS1G05_218T01_9000001394cztM0_level2_quad_clean.evt
Size (bytes)5,074,571,5201,774,843,200
Size4.7 GB 1.7 GB
Events in quadrant A29,430,20411,069,916
Events in quadrant B30,528,87511,271,172
Events in quadrant C28,932,04310,960,344
Events in quadrant D54,813,06010,423,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029900
B030170
C029900
D029780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03037680
B03075590
C03027620
D04002890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02280
C02270
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14662219761.347683%
B14652923391.596271%
C14651614821.011494%
D14581063994.388588%

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 191058 149595 35 35 0.02% 0.02%
B 191058 149558 14 14 0.01% 0.01%
C 191058 149535 19 19 0.01% 0.01%
D 191058 149049 596 596 0.31% 0.40%

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 231565 139.02 7422 7270 1613.4
A 12 210 221496 132.78 7422 7270 1613.4
A 1 162 142814 84.01 7422 7270 1613.4
B 0 214 448674 312.75 7486 7281 1411.3
B 4 239 322213 223.15 7486 7281 1411.3
B 0 85 146843 98.89 7486 7281 1411.3
C 10 22 209039 128.88 7214 7106 1566.8
C 14 234 146908 89.23 7214 7106 1566.8
C 1 3 114140 68.31 7214 7106 1566.8
D 1 52 18795865 10489.96 7076 6860 1791.1
D 2 152 2728960 1519.76 7076 6860 1791.1
D 12 233 1421232 789.65 7076 6860 1791.1

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