ASTROSAT CZTI

Data Quality Report

Orbit 44138

Creation date: 2024-06-27T22:59:38.728526
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_012T02_9000005950_44138cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44138cztM0_level2_quad_clean.evt
Size (bytes)377,530,56095,273,280
Size360.0 MB 90.9 MB
Events in quadrant A3,838,688643,917
Events in quadrant B2,936,422658,072
Events in quadrant C2,827,375630,324
Events in quadrant D3,938,124561,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081
B081
C081
D081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01142
C01140
D01141

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01573958
B01241054
C01221163
D01554664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5588510.912670%
B55841011.808739%
C5588370.662133%
D55842374.244269%

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 7616 5595 0 0 0.00% 0.00%
B 7616 5592 42 42 0.55% 0.75%
C 7617 5594 28 28 0.37% 0.50%
D 7616 5591 179 179 2.35% 3.20%

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 1268488 9307.9 657 643 136.2
A 7 3 12983 90.59 657 643 136.2
A 13 6 10463 72.09 657 643 136.2
B 5 172 245250 1932.2 651 634 126.6
B 4 158 44707 348.13 651 634 126.6
B 0 183 25307 194.89 651 634 126.6
C 14 254 176828 1160.47 648 653 151.8
C 14 96 99322 649.93 648 653 151.8
C 1 241 14264 89.66 648 653 151.8
D 12 233 282685 1759.96 640 623 160.3
D 1 47 275862 1717.38 640 623 160.3
D 7 204 257901 1605.31 640 623 160.3

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