ASTROSAT CZTI

Data Quality Report

Orbit 38127

Creation date: 2024-06-27T21:48:45.237234
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_001T12_9000005366_38127cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38127cztM0_level2_quad_clean.evt
Size (bytes)348,782,40093,003,840
Size332.6 MB 88.7 MB
Events in quadrant A3,417,542628,400
Events in quadrant B2,679,521650,861
Events in quadrant C2,808,044629,821
Events in quadrant D3,608,232549,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134553
B0113362
C0115832
D0141922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5106741.449275%
B5106601.175088%
C5106280.548374%
D51062925.718762%

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 7020 5107 61 61 0.87% 1.19%
B 7020 5107 46 46 0.66% 0.90%
C 7020 5107 22 22 0.31% 0.43%
D 7020 5107 294 294 4.19% 5.76%

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 12 16 643821 5444.1 584 574 118.2
A 10 83 352111 2975.22 584 574 118.2
A 12 194 96456 811.49 584 574 118.2
B 4 81 149075 1355.54 587 571 109.6
B 5 172 92915 842.91 587 571 109.6
B 0 229 74046 670.68 587 571 109.6
C 15 214 214119 1590.83 581 588 134.2
C 0 239 200852 1491.99 581 588 134.2
C 1 23 73255 541.38 581 588 134.2
D 12 227 830107 6144.16 562 546 135.0
D 12 233 83365 613.4 562 546 135.0
D 13 249 78571 577.89 562 546 135.0

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