ASTROSAT CZTI

Data Quality Report

Orbit 40793

Creation date: 2024-06-27T22:20:34.178385
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_9000005568_40793cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40793cztM0_level2_quad_clean.evt
Size (bytes)295,545,60088,439,040
Size281.9 MB 84.3 MB
Events in quadrant A2,745,165597,417
Events in quadrant B2,425,848622,747
Events in quadrant C2,608,330584,794
Events in quadrant D2,772,736524,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111813
B0103812
C0107042
D0117492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974180.361882%
B4974390.784077%
C4974811.628468%
D49741533.075995%

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 7037 4975 14 14 0.20% 0.28%
B 7037 4975 38 38 0.54% 0.76%
C 7037 4975 80 80 1.14% 1.61%
D 7037 4975 145 145 2.06% 2.91%

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 465987 4016.2 565 555 115.9
A 12 189 45105 384.42 565 555 115.9
A 6 10 20820 174.87 565 555 115.9
B 7 202 100392 912.68 570 554 109.4
B 0 230 47805 431.95 570 554 109.4
B 5 255 28488 255.36 570 554 109.4
C 0 10 218009 1688.51 554 559 128.8
C 15 214 213856 1656.26 554 559 128.8
C 14 254 9449 69.03 554 559 128.8
D 2 249 347187 2585.11 541 526 134.1
D 13 249 270281 2011.61 541 526 134.1
D 2 153 32002 234.72 541 526 134.1

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