ASTROSAT CZTI

Data Quality Report

Orbit 48214

Creation date: 2024-08-27T22:03:52.327148
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/AS1C09_004T05_9000006416_48214cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48214cztM0_level2_quad_clean.evt
Size (bytes)546,071,040106,266,240
Size520.8 MB 101.3 MB
Events in quadrant A7,454,494755,246
Events in quadrant B4,704,930609,404
Events in quadrant C2,951,415729,628
Events in quadrant D4,607,280676,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264571
B0183391
C0133171
D0181721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64022834.420494%
B6357136921.535315%
C6403340.531001%
D64031181.842886%

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 7607 6403 75 75 0.99% 1.17%
B 7607 6358 105 105 1.38% 1.65%
C 7608 6404 11 11 0.14% 0.17%
D 7608 6404 71 71 0.93% 1.11%

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 10 83 4496071 29985.12 725 710 149.9
A 15 174 53740 353.72 725 710 149.9
A 3 14 43624 286.25 725 710 149.9
B 10 7 1413863 12865.83 575 558 109.8
B 0 200 287946 2616.2 575 558 109.8
B 2 177 162349 1472.84 575 558 109.8
C 12 2 60382 357.46 714 716 166.9
C 0 207 30498 178.43 714 716 166.9
C 4 0 28559 166.81 714 716 166.9
D 2 165 1278893 7113.89 719 696 179.7
D 2 249 141842 785.56 719 696 179.7
D 7 96 98623 545.02 719 696 179.7

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