ASTROSAT CZTI

Data Quality Report

Orbit 46085

Creation date: 2024-06-27T23:19:00.013138
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_077T01_9000006168_46085cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46085cztM0_level2_quad_clean.evt
Size (bytes)459,048,960108,777,600
Size437.8 MB 103.7 MB
Events in quadrant A5,876,135709,082
Events in quadrant B3,455,303753,660
Events in quadrant C2,880,088726,336
Events in quadrant D4,273,554648,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218432
B0146343
C0133252
D0172802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65382073.166106%
B6537510.780174%
C653780.122380%
D65372363.610219%

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 7578 6539 37 37 0.49% 0.57%
B 7577 6538 6 6 0.08% 0.09%
C 7577 6538 0 0 0.00% 0.00%
D 7577 6538 158 158 2.09% 2.42%

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 2975228 19254.38 738 722 154.5
A 10 255 18996 118.29 738 722 154.5
A 14 248 13664 83.78 738 722 154.5
B 0 190 187654 1257.75 747 725 148.6
B 15 201 151041 1011.4 747 725 148.6
B 5 63 95910 640.45 747 725 148.6
C 3 233 7804 40.67 737 742 173.7
C 13 61 4880 23.83 737 742 173.7
C 14 67 1853 6.4 737 742 173.7
D 1 52 541111 2950.06 721 698 183.2
D 5 235 346308 1886.65 721 698 183.2
D 13 249 324793 1769.2 721 698 183.2

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