ASTROSAT CZTI

Data Quality Report

Orbit 28128

Creation date: 2024-06-27T19:48:24.171901
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/AS1A10_045T04_9000004066_28128cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28128cztM0_level2_quad_clean.evt
Size (bytes)218,589,12048,983,040
Size208.5 MB 46.7 MB
Events in quadrant A1,522,009324,293
Events in quadrant B1,579,258329,224
Events in quadrant C1,527,736310,305
Events in quadrant D1,786,529306,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063320
B064670
C063460
D071610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29781374.600403%
B29781474.936199%
C29781645.507052%
D29771254.198858%

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 3488 2978 0 0 0.00% 0.00%
B 3488 2978 1 1 0.03% 0.03%
C 3488 2978 0 0 0.00% 0.00%
D 3487 2977 19 19 0.54% 0.64%

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 4096 45.26 394 384 82.0
A 3 137 4045 44.63 394 384 82.0
A 0 226 3415 36.95 394 384 82.0
B 4 200 20367 258.41 388 378 77.4
B 5 255 12974 162.83 388 378 77.4
B 10 246 10903 136.06 388 378 77.4
C 14 238 57332 633.24 373 373 89.9
C 15 208 13103 141.53 373 373 89.9
C 3 233 4016 40.5 373 373 89.9
D 1 52 140344 1525.2 379 369 91.8
D 8 195 131290 1426.55 379 369 91.8
D 5 222 43178 466.46 379 369 91.8

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