ASTROSAT CZTI

Data Quality Report

Orbit 45144

Creation date: 2024-06-27T23:09:56.137212
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_017T02_9000006046_45144cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45144cztM0_level2_quad_clean.evt
Size (bytes)748,448,640105,194,880
Size713.8 MB 100.3 MB
Events in quadrant A14,811,267356,879
Events in quadrant B3,878,447818,608
Events in quadrant C3,660,460784,377
Events in quadrant D4,773,551703,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04914211
B0164846
C0161353
D0192063

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7487453560.571658%
B74852963.954576%
C74872553.405904%
D74883855.141560%

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 7767 7487 3873 3873 49.86% 51.73%
B 7767 7488 29 29 0.37% 0.39%
C 7767 7489 24 24 0.31% 0.32%
D 7768 7491 141 141 1.82% 1.88%

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 15 223 10287697 79091.45 622 608 130.1
A 10 83 2012192 15465.9 622 608 130.1
A 15 174 41993 318.19 622 608 130.1
B 10 3 161245 893.14 889 860 179.6
B 4 170 93340 514.99 889 860 179.6
B 0 183 26119 140.66 889 860 179.6
C 3 233 69385 324.05 887 892 211.4
C 2 14 54354 252.94 887 892 211.4
C 6 247 44773 207.61 887 892 211.4
D 1 52 364282 1630.47 884 854 222.9
D 13 249 330583 1479.29 884 854 222.9
D 2 249 173542 774.74 884 854 222.9

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