ASTROSAT CZTI

Data Quality Report

Orbit 39379

Creation date: 2024-06-27T22:03:53.288904
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_9000005470_39379cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39379cztM0_level2_quad_clean.evt
Size (bytes)543,620,16088,009,920
Size518.4 MB 83.9 MB
Events in quadrant A2,887,396644,015
Events in quadrant B4,054,086627,061
Events in quadrant C2,747,432616,498
Events in quadrant D9,983,800372,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120392
B0159741
C0118421
D0336991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579580.138050%
B57953626.246764%
C579540.069025%
D5795247042.622951%

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 7138 5796 3 3 0.04% 0.05%
B 7138 5796 216 216 3.03% 3.73%
C 7138 5796 2 2 0.03% 0.03%
D 7138 5796 2029 2029 28.43% 35.01%

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 430867 3341.67 633 620 128.8
A 13 254 8013 57.42 633 620 128.8
A 3 137 6867 48.52 633 620 128.8
B 5 200 1453837 12051.78 617 598 120.6
B 5 172 140298 1158.54 617 598 120.6
B 4 170 28324 229.93 617 598 120.6
C 15 214 244876 1707.63 613 617 143.0
C 9 187 58368 403.74 613 617 143.0
C 14 254 33593 230.54 613 617 143.0
D 12 235 7048947 56412.54 500 484 124.9
D 13 249 573314 4584.66 500 484 124.9
D 2 249 171972 1372.51 500 484 124.9

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