ASTROSAT CZTI

Data Quality Report

Orbit 27877

Creation date: 2024-06-27T19:45:29.605624
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_024T01_9000004026_27877cztM0_level2.evt modeM0/AS1A10_024T01_9000004026_27877cztM0_level2_quad_clean.evt
Size (bytes)201,110,40041,745,600
Size191.8 MB 39.8 MB
Events in quadrant A1,401,762283,398
Events in quadrant B1,558,712283,876
Events in quadrant C1,473,025261,619
Events in quadrant D1,490,682260,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057770
B063070
C060190
D060180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2416823.394040%
B24161144.718543%
C2416823.394040%
D2416582.400662%

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 3641 2416 0 0 0.00% 0.00%
B 3641 2416 28 28 0.77% 1.16%
C 3641 2416 0 0 0.00% 0.00%
D 3641 2416 8 8 0.22% 0.33%

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 4167 52.06 363 356 73.2
A 3 137 3295 40.15 363 356 73.2
A 0 226 3179 38.56 363 356 73.2
B 5 172 88510 1307.65 351 344 67.4
B 10 245 42293 622.17 351 344 67.4
B 0 190 30981 454.4 351 344 67.4
C 3 233 114787 1470.96 334 336 77.8
C 14 238 54433 695.27 334 336 77.8
C 13 61 2302 25.27 334 336 77.8
D 1 52 78885 932.03 347 337 84.3
D 2 250 45860 540.16 347 337 84.3
D 8 195 26255 307.54 347 337 84.3

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