ASTROSAT CZTI

Data Quality Report

Orbit 42187

Creation date: 2024-06-27T22:38:15.893771
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/AS1A12_088T24_9000005768_42187cztM0_level2.fits modeM0/AS1A12_088T24_9000005768_42187cztM0_level2_quad_clean.evt
Size (bytes)303,442,56086,955,840
Size289.4 MB 82.9 MB
Events in quadrant A2,826,744584,143
Events in quadrant B2,522,644604,970
Events in quadrant C2,402,346568,731
Events in quadrant D3,072,778509,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115382
B0111232
C0105352
D0129682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231130.248518%
B5232170.324924%
C523140.076467%
D52311532.924871%

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 9327 5233 11 11 0.12% 0.21%
B 9328 5234 13 13 0.14% 0.25%
C 9327 5233 0 0 0.00% 0.00%
D 9327 5232 171 171 1.83% 3.27%

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 523416 4463.84 571 559 117.1
A 15 223 82706 701.32 571 559 117.1
A 15 252 6838 53.61 571 559 117.1
B 5 255 172264 1550.85 571 556 110.7
B 0 229 87113 781.77 571 556 110.7
B 15 35 17163 149.99 571 556 110.7
C 15 214 219358 1668.25 558 562 131.2
C 13 61 3788 24.6 558 562 131.2
C 15 111 2721 16.46 558 562 131.2
D 12 218 269920 1995.41 542 525 135.0
D 12 6 237631 1756.24 542 525 135.0
D 7 55 175224 1293.99 542 525 135.0

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