ASTROSAT CZTI

Data Quality Report

Orbit 38488

Creation date: 2024-06-27T21:53:26.119011
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_38488cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38488cztM0_level2_quad_clean.evt
Size (bytes)406,494,72087,523,200
Size387.7 MB 83.5 MB
Events in quadrant A2,910,993622,578
Events in quadrant B3,102,136628,025
Events in quadrant C2,539,613593,806
Events in quadrant D6,088,842440,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117272
B0125671
C0107721
D0216611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211190.364613%
B52111593.051238%
C5211130.249472%
D5211116622.375744%

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 7004 5212 5 5 0.07% 0.10%
B 7004 5212 121 121 1.73% 2.32%
C 7004 5212 10 10 0.14% 0.19%
D 7004 5212 1156 1156 16.50% 22.18%

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 339205 2783.09 597 585 121.7
A 15 222 176804 1448.33 597 585 121.7
A 12 189 45253 367.12 597 585 121.7
B 8 3 423948 3806.63 583 566 111.2
B 0 183 143865 1288.4 583 566 111.2
B 4 171 129678 1160.84 583 566 111.2
C 15 214 217543 1640.31 569 573 132.3
C 5 250 80712 605.86 569 573 132.3
C 0 10 8511 60.01 569 573 132.3
D 12 227 3332010 26823.71 512 496 124.2
D 7 223 137903 1106.33 512 496 124.2
D 10 118 135163 1084.27 512 496 124.2

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