ASTROSAT CZTI

Data Quality Report

Orbit 39692

Creation date: 2024-06-27T22:07:48.179062
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_051T01_9000005490_39692cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39692cztM0_level2_quad_clean.evt
Size (bytes)566,570,88089,856,000
Size540.3 MB 85.7 MB
Events in quadrant A9,390,313381,970
Events in quadrant B3,004,753707,649
Events in quadrant C5,000,486638,158
Events in quadrant D3,163,241619,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315873
B0123272
C0185392
D0130022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329273451.304185%
B5329831.557515%
C53293326.230062%
D5329811.519985%

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 7362 5330 2241 2241 30.44% 42.05%
B 7362 5330 58 58 0.79% 1.09%
C 7362 5330 294 294 3.99% 5.52%
D 7362 5330 68 68 0.92% 1.28%

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 5830668 55957.03 516 508 104.2
A 0 8 648681 6221.07 516 508 104.2
A 15 174 494109 4737.51 516 508 104.2
B 5 172 262310 2165.28 636 621 120.9
B 5 255 129788 1068.76 636 621 120.9
B 10 246 64351 527.32 636 621 120.9
C 15 208 1833646 13296.11 598 601 137.9
C 9 187 548775 3976.21 598 601 137.9
C 15 214 217267 1571.6 598 601 137.9
D 13 249 189777 1244.9 618 600 152.0
D 12 227 168027 1101.77 618 600 152.0
D 12 233 119792 784.35 618 600 152.0

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