ASTROSAT CZTI

Data Quality Report

Orbit 27877

Creation date: 2024-06-27T19:45:28.704382
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_002T05_9000004024_27877cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27877cztM0_level2_quad_clean.evt
Size (bytes)223,709,76052,372,800
Size213.3 MB 49.9 MB
Events in quadrant A1,506,961363,155
Events in quadrant B1,790,932353,112
Events in quadrant C1,719,350331,120
Events in quadrant D1,562,133334,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061880
B071540
C069060
D063040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285000.000000%
B2851561.964223%
C2851240.841810%
D2851120.420905%

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 2850 2850 0 0 0.00% 0.00%
B 2851 2851 50 50 1.75% 1.75%
C 2851 2851 4 4 0.14% 0.14%
D 2851 2851 13 13 0.46% 0.46%

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 6 16 7734 94.83 388 383 77.5
A 13 254 5265 62.98 388 383 77.5
A 0 226 3401 38.93 388 383 77.5
B 5 172 161214 2250.72 373 364 71.5
B 4 52 85670 1193.66 373 364 71.5
B 10 245 55211 767.46 373 364 71.5
C 3 233 242657 2915.83 355 359 83.1
C 14 238 58543 700.19 355 359 83.1
C 15 208 26481 314.35 355 359 83.1
D 1 52 92642 1050.26 371 363 87.9
D 2 250 41678 470.22 371 363 87.9
D 12 0 11934 131.69 371 363 87.9

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