ASTROSAT CZTI

Data Quality Report

Orbit 41072

Creation date: 2024-06-27T22:24:06.273995
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_095T02_9000005596_41072cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41072cztM0_level2_quad_clean.evt
Size (bytes)536,048,640144,875,520
Size511.2 MB 138.2 MB
Events in quadrant A5,028,782971,124
Events in quadrant B4,966,236984,910
Events in quadrant C4,320,978950,265
Events in quadrant D4,848,900873,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204863
B0208632
C0184342
D0205372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8732250.286303%
B87321822.084288%
C8732790.904718%
D87321271.454421%

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 12618 8734 11 11 0.09% 0.13%
B 12618 8734 140 140 1.11% 1.60%
C 12618 8734 76 76 0.60% 0.87%
D 12618 8734 121 121 0.96% 1.39%

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 752065 3864.14 951 932 194.4
A 12 189 520691 2673.85 951 932 194.4
A 13 248 62615 317.32 951 932 194.4
B 0 186 467109 2566.88 945 917 181.6
B 5 255 365901 2009.62 945 917 181.6
B 0 190 233229 1279.12 945 917 181.6
C 15 214 363184 1675.56 931 938 216.2
C 0 10 178587 821.71 931 938 216.2
C 14 254 143623 659.99 931 938 216.2
D 12 79 475687 2090.24 924 899 227.1
D 2 249 268561 1178.38 924 899 227.1
D 2 16 168663 738.58 924 899 227.1

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