ASTROSAT CZTI

Data Quality Report

Orbit 38421

Creation date: 2024-06-27T21:52:32.230126
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_018T01_9000005386_38421cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38421cztM0_level2_quad_clean.evt
Size (bytes)362,191,68086,955,840
Size345.4 MB 82.9 MB
Events in quadrant A2,943,205591,156
Events in quadrant B2,526,580602,725
Events in quadrant C2,455,455576,970
Events in quadrant D5,084,811503,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119153
B0108802
C0104342
D0186882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5105280.548482%
B5105160.313418%
C5105200.391773%
D51054338.481881%

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 7077 5106 15 15 0.21% 0.29%
B 7077 5106 7 7 0.10% 0.14%
C 7077 5106 6 6 0.08% 0.12%
D 7077 5106 443 443 6.26% 8.68%

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 393774 3463.33 563 552 113.5
A 15 223 182623 1603.6 563 552 113.5
A 12 189 69224 604.83 563 552 113.5
B 0 183 89768 832.58 562 547 107.2
B 15 35 58755 543.18 562 547 107.2
B 0 155 30077 275.56 562 547 107.2
C 15 214 217067 1667.98 555 558 129.8
C 0 10 26251 197.94 555 558 129.8
C 14 254 21016 157.61 555 558 129.8
D 12 235 1933710 14852.41 539 525 130.2
D 2 250 339008 2600.52 539 525 130.2
D 2 16 332383 2549.62 539 525 130.2

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