ASTROSAT CZTI

Data Quality Report

Orbit 44562

Creation date: 2024-06-27T23:03:59.759058
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_003T01_9000006002_44562cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44562cztM0_level2_quad_clean.evt
Size (bytes)490,011,840113,037,120
Size467.3 MB 107.8 MB
Events in quadrant A5,330,343753,229
Events in quadrant B3,884,341777,190
Events in quadrant C3,776,415763,375
Events in quadrant D4,643,985676,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212162
B0157892
C0155012
D0182492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64883255.009248%
B64883865.949445%
C64881452.234895%
D64883495.379162%

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 7658 6488 25 25 0.33% 0.39%
B 7658 6488 160 160 2.09% 2.47%
C 7658 6489 55 55 0.72% 0.85%
D 7658 6488 237 237 3.09% 3.65%

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 1918319 12023.2 778 762 159.5
A 15 223 344797 2157.12 778 762 159.5
A 13 248 57138 353.48 778 762 159.5
B 5 172 511153 3364.15 778 753 151.7
B 5 235 167624 1099.88 778 753 151.7
B 5 32 69689 454.37 778 753 151.7
C 15 208 427165 2376.65 768 774 179.4
C 14 254 245430 1363.68 768 774 179.4
C 3 233 92958 513.82 768 774 179.4
D 5 222 688253 3664.41 757 734 187.6
D 7 38 390590 2077.9 757 734 187.6
D 2 249 285031 1515.28 757 734 187.6

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