ASTROSAT CZTI

Data Quality Report

Orbit 41869

Creation date: 2024-06-27T22:33:51.951803
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/AS1T05_124T01_9000005712_41869cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41869cztM0_level2_quad_clean.evt
Size (bytes)241,056,00045,766,080
Size229.9 MB 43.6 MB
Events in quadrant A2,457,299314,356
Events in quadrant B1,440,333328,145
Events in quadrant C1,709,833294,895
Events in quadrant D3,089,932242,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092322
B061901
C067861
D0111421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28801655.729167%
B2880371.284722%
C28801274.409722%
D288055919.409722%

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 4613 2881 121 121 2.62% 4.20%
B 4613 2881 25 25 0.54% 0.87%
C 4613 2881 124 124 2.69% 4.30%
D 4613 2881 530 530 11.49% 18.40%

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 14 24 935056 14377.08 312 305 65.0
A 10 83 283065 4349.03 312 305 65.0
A 14 250 16086 242.71 312 305 65.0
B 15 35 79805 1279.73 316 307 62.1
B 0 245 46768 747.91 316 307 62.1
B 0 186 24386 387.61 316 307 62.1
C 0 10 411149 5687.86 301 302 72.2
C 15 214 113110 1561.74 301 302 72.2
C 15 111 7120 94.39 301 302 72.2
D 12 79 1549641 21655.33 287 280 71.5
D 5 222 153217 2137.59 287 280 71.5
D 2 249 150648 2101.68 287 280 71.5

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