ASTROSAT CZTI

Data Quality Report

Orbit 39632

Creation date: 2024-06-27T22:07:04.148129
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_018T01_9000005488_39632cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39632cztM0_level2_quad_clean.evt
Size (bytes)456,085,44090,308,160
Size435.0 MB 86.1 MB
Events in quadrant A4,098,024626,360
Events in quadrant B2,571,365641,695
Events in quadrant C5,720,828555,060
Events in quadrant D4,075,414534,688

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156603
B0113292
C0205942
D0157272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53751142.120930%
B5375270.502326%
C537565012.093023%
D53753857.162791%

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 7170 5376 64 64 0.89% 1.19%
B 7170 5376 11 11 0.15% 0.20%
C 7170 5376 593 593 8.27% 11.03%
D 7170 5375 321 321 4.48% 5.97%

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 15 222 1304049 10766.88 599 586 121.1
A 10 83 444249 3664.75 599 586 121.1
A 15 174 28131 227.52 599 586 121.1
B 5 255 140388 1225.19 594 577 114.1
B 5 172 78890 686.27 594 577 114.1
B 0 230 22087 188.5 594 577 114.1
C 15 208 1672413 12790.21 563 567 130.7
C 9 187 1613779 12341.64 563 567 130.7
C 15 214 218691 1668.72 563 567 130.7
D 13 249 1491869 10704.74 572 557 139.3
D 1 52 170497 1219.84 572 557 139.3
D 12 233 113079 807.69 572 557 139.3

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