ASTROSAT CZTI

Data Quality Report

Orbit 03281

Creation date: 2024-06-27T14:27:02.500679
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/AS1G05_002T02_9000000444_03281cztM0_level2.evt modeM0/AS1G05_002T02_9000000444_03281cztM0_level2_quad_clean.evt
Size (bytes)2,476,100,160380,822,400
Size2.3 GB 363.2 MB
Events in quadrant A17,481,6802,304,990
Events in quadrant B22,129,7412,323,953
Events in quadrant C16,491,1862,330,024
Events in quadrant D16,617,7302,264,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0765055
B0886055
C0736065
D0749365

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06820
B06820
C06820
D06820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3362612043.580563%
B336266171.834890%
C336264721.403676%
D336267092.108487%

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 37136 33631 605 605 1.63% 1.80%
B 37136 33631 74 74 0.20% 0.22%
C 37136 33631 232 232 0.62% 0.69%
D 37136 33631 465 465 1.25% 1.38%

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 0 50 1431145 1880.62 3714 3627 759.1
A 14 249 1011585 1327.89 3714 3627 759.1
A 0 118 594767 778.77 3714 3627 759.1
B 15 204 6278659 8579.81 3812 3712 731.4
B 2 249 722994 983.48 3812 3712 731.4
B 14 167 160934 214.97 3812 3712 731.4
C 14 223 1218972 1443.97 3639 3648 841.7
C 6 80 297741 349.42 3639 3648 841.7
C 12 175 260286 304.92 3639 3648 841.7
D 13 223 1147029 1311.78 3621 3503 871.7
D 13 239 524721 597.91 3621 3503 871.7
D 1 193 466518 531.14 3621 3503 871.7

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