ASTROSAT CZTI

Data Quality Report

Orbit 45875

Creation date: 2024-06-27T23:17:11.457263
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/AS1C07_001T01_9000006136_45875cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45875cztM0_level2_quad_clean.evt
Size (bytes)557,107,200103,121,280
Size531.3 MB 98.3 MB
Events in quadrant A5,739,084701,255
Events in quadrant B7,626,965589,812
Events in quadrant C2,843,067720,511
Events in quadrant D3,896,848646,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220081
B0272781
C0134641
D0163801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66601111.666667%
B6660155623.363363%
C666130.045038%
D66611001.501276%

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 7560 6661 24 24 0.32% 0.36%
B 7560 6660 1036 1036 13.70% 15.56%
C 7561 6662 0 0 0.00% 0.00%
D 7561 6662 68 68 0.90% 1.02%

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 2872191 19229.62 716 702 149.3
A 0 247 53135 351.13 716 702 149.3
A 7 3 12459 78.73 716 702 149.3
B 3 112 4785537 37328.36 653 633 128.2
B 4 171 91652 710.06 653 633 128.2
B 5 172 42183 324.14 653 633 128.2
C 15 208 7662 41.09 723 727 168.8
C 3 233 6330 33.2 723 727 168.8
C 14 254 5844 30.32 723 727 168.8
D 1 52 417247 2315.4 714 693 179.9
D 13 249 136615 755.52 714 693 179.9
D 11 241 131426 726.68 714 693 179.9

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