ASTROSAT CZTI

Data Quality Report

Orbit 33840

Creation date: 2024-06-27T20:53:13.349499
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/AS1A11_106T03_9000004826_33840cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33840cztM0_level2_quad_clean.evt
Size (bytes)579,170,88072,976,320
Size552.3 MB 69.6 MB
Events in quadrant A4,676,396467,107
Events in quadrant B3,506,117465,691
Events in quadrant C3,065,655467,795
Events in quadrant D5,929,032432,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178933
B0137512
C0120972
D0212982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5374430.800149%
B53742815.228880%
C5374450.837365%
D537459010.978787%

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 7137 5375 1 1 0.01% 0.02%
B 7137 5375 217 217 3.04% 4.04%
C 7137 5375 35 35 0.49% 0.65%
D 7137 5375 567 567 7.94% 10.55%

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 15 169 2134251 16414.2 651 640 130.0
A 13 6 18422 136.8 651 640 130.0
A 10 83 10698 77.38 651 640 130.0
B 5 172 878649 7305.89 631 616 120.2
B 4 251 68478 564.66 631 616 120.2
B 0 190 19149 154.21 631 616 120.2
C 15 214 234249 1614.22 625 630 144.7
C 14 254 130149 894.93 625 630 144.7
C 0 10 117833 809.83 625 630 144.7
D 12 235 1095453 7336.49 611 593 149.2
D 8 195 989108 6623.89 611 593 149.2
D 13 249 529533 3544.35 611 593 149.2

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