ASTROSAT CZTI

Data Quality Report

Orbit 25136

Creation date: 2024-06-27T19:14:15.538676
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/AS1A07_018T07_9000003680_25136cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25136cztM0_level2_quad_clean.evt
Size (bytes)498,386,88082,428,480
Size475.3 MB 78.6 MB
Events in quadrant A2,917,584525,006
Events in quadrant B2,973,965533,226
Events in quadrant C4,341,026502,145
Events in quadrant D4,432,497495,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127480
B0128380
C0167140
D0172710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313530.839537%
B6313741.172184%
C63134987.888484%
D63132173.437351%

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 7058 6313 0 0 0.00% 0.00%
B 7058 6313 3 3 0.04% 0.05%
C 7058 6313 401 401 5.68% 6.35%
D 7058 6313 157 157 2.22% 2.49%

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 13 254 9666 58.26 756 740 153.2
A 3 137 7117 41.62 756 740 153.2
A 0 226 6346 36.59 756 740 153.2
B 12 111 18454 122.12 752 733 145.1
B 11 111 16471 108.45 752 733 145.1
B 14 111 14962 98.05 752 733 145.1
C 7 247 1483856 9047.46 695 700 163.9
C 14 238 108309 656.43 695 700 163.9
C 7 87 26121 155.07 695 700 163.9
D 1 52 1169572 6553.26 727 704 178.4
D 8 195 285625 1597.41 727 704 178.4
D 2 244 164009 915.57 727 704 178.4

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