ASTROSAT CZTI

Data Quality Report

Orbit 38851

Creation date: 2024-06-27T21:57:14.585087
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_077T06_9000005408_38851cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38851cztM0_level2_quad_clean.evt
Size (bytes)354,769,92095,696,640
Size338.3 MB 91.3 MB
Events in quadrant A2,960,338657,908
Events in quadrant B2,790,790671,595
Events in quadrant C2,659,942648,879
Events in quadrant D4,321,138559,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119993
B0115532
C0111362
D0164502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5142230.447297%
B5142921.789187%
C5142120.233372%
D51424438.615325%

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 7054 5143 6 6 0.09% 0.12%
B 7054 5143 59 59 0.84% 1.15%
C 7054 5143 6 6 0.09% 0.12%
D 7054 5143 381 381 5.40% 7.41%

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 400611 3219.71 614 602 124.2
A 13 248 144317 1156.77 614 602 124.2
A 12 16 21788 170.53 614 602 124.2
B 4 251 218173 1879.07 612 598 115.8
B 5 184 93521 802.52 612 598 115.8
B 5 172 30900 261.7 612 598 115.8
C 15 214 215888 1538.77 609 615 139.9
C 14 254 28676 200.58 609 615 139.9
C 0 10 25752 179.68 609 615 139.9
D 2 250 1133389 8003.22 583 569 141.5
D 2 249 369930 2609.49 583 569 141.5
D 12 227 151018 1062.9 583 569 141.5

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