ASTROSAT CZTI

Data Quality Report

Orbit 39118

Creation date: 2024-06-27T22:00:40.730942
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/AS1A12_044T04_9000005434_39118cztM0_level2.fits modeM0/AS1A12_044T04_9000005434_39118cztM0_level2_quad_clean.evt
Size (bytes)420,252,48090,878,400
Size400.8 MB 86.7 MB
Events in quadrant A2,851,728622,902
Events in quadrant B2,804,334627,606
Events in quadrant C2,650,740600,289
Events in quadrant D6,816,952510,882

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01196417
B01226627
C01143018
D02429449

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5573160.287099%
B55691001.795655%
C557250.089734%
D556964211.528102%

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 6980 5577 6 6 0.09% 0.11%
B 6980 5574 51 51 0.73% 0.91%
C 6979 5574 5 5 0.07% 0.09%
D 6976 5573 559 559 8.01% 10.03%

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 10 83 448525 3601.9 611 597 124.4
A 13 248 20199 157.62 611 597 124.4
A 13 254 8219 61.29 611 597 124.4
B 5 172 139726 1183.88 606 589 117.5
B 0 186 130947 1109.18 606 589 117.5
B 5 184 51462 432.87 606 589 117.5
C 15 214 235157 1699.95 593 596 138.0
C 9 187 47973 343.36 593 596 138.0
C 15 208 34006 242.13 593 596 138.0
D 12 235 3754357 26781.12 571 554 140.2
D 2 249 459771 3276.24 571 554 140.2
D 2 153 88888 630.21 571 554 140.2

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