ASTROSAT CZTI

Data Quality Report

Orbit 47677

Creation date: 2024-07-22T15:15:59.604178
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/AS1A13_082T01_9000006342_47677cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47677cztM0_level2_quad_clean.evt
Size (bytes)406,840,32096,684,480
Size388.0 MB 92.2 MB
Events in quadrant A6,006,505636,148
Events in quadrant B2,876,935666,197
Events in quadrant C2,591,995640,473
Events in quadrant D3,142,208586,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221542
B0123031
C0117381
D0131451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56941983.477345%
B5695651.141352%
C5695360.632133%
D5695871.527656%

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 6869 5695 83 83 1.21% 1.46%
B 6870 5696 11 11 0.16% 0.19%
C 6870 5696 6 6 0.09% 0.11%
D 6870 5696 51 51 0.74% 0.90%

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 3166164 22960.53 662 648 137.9
A 9 191 277982 2011.59 662 648 137.9
A 7 3 8416 56.34 662 648 137.9
B 0 200 145585 1117.76 658 638 129.7
B 0 190 82456 630.94 658 638 129.7
B 15 54 31485 237.88 658 638 129.7
C 14 254 52325 336.16 649 653 153.7
C 12 250 4387 24.29 649 653 153.7
C 13 61 4301 23.73 649 653 153.7
D 2 165 192102 1168.88 656 634 163.8
D 2 249 184135 1120.24 656 634 163.8
D 12 218 69686 421.55 656 634 163.8

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