ASTROSAT CZTI

Data Quality Report

Orbit 26187

Creation date: 2024-06-27T19:25:51.749597
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/AS1A09_012T03_9000003782_26187cztM0_level2.evt modeM0/AS1A09_012T03_9000003782_26187cztM0_level2_quad_clean.evt
Size (bytes)161,182,08046,071,360
Size153.7 MB 43.9 MB
Events in quadrant A1,108,745309,962
Events in quadrant B1,123,647319,653
Events in quadrant C1,176,890306,792
Events in quadrant D1,322,241301,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045790
B045930
C047560
D052520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2175602.758621%
B2174452.069917%
C2174823.771849%
D2174984.507820%

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 3235 2176 0 0 0.00% 0.00%
B 3234 2175 0 0 0.00% 0.00%
C 3234 2175 0 0 0.00% 0.00%
D 3234 2175 16 16 0.49% 0.74%

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 3268 50.15 287 279 59.6
A 3 137 2578 38.57 287 279 59.6
A 0 226 2428 36.05 287 279 59.6
B 0 230 7214 125.86 284 276 55.1
B 12 111 6507 113.03 284 276 55.1
B 11 111 6062 104.96 284 276 55.1
C 14 238 45017 667.61 282 282 67.0
C 2 16 21052 309.96 282 282 67.0
C 3 233 10349 150.24 282 282 67.0
D 1 52 242919 3570.16 284 276 68.0
D 2 234 8001 113.66 284 276 68.0
D 3 238 3029 40.51 284 276 68.0

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