ASTROSAT CZTI

Data Quality Report

Orbit 39349

Creation date: 2024-06-27T22:03:32.047594
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_39349cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39349cztM0_level2_quad_clean.evt
Size (bytes)533,528,64084,211,200
Size508.8 MB 80.3 MB
Events in quadrant A2,858,642630,815
Events in quadrant B2,462,639646,294
Events in quadrant C2,752,602603,493
Events in quadrant D11,238,211275,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118433
B0113862
C0117302
D0373402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5619110.195764%
B5619100.177968%
C561990.160171%
D5619326958.177612%

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 7172 5620 4 4 0.06% 0.07%
B 7172 5620 6 6 0.08% 0.11%
C 7172 5620 2 2 0.03% 0.04%
D 7172 5620 2675 2675 37.30% 47.60%

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 443353 3565.76 614 600 124.2
A 13 248 22162 173.65 614 600 124.2
A 15 222 12231 93.67 614 600 124.2
B 5 172 30865 258.55 607 591 117.1
B 0 183 26735 223.28 607 591 117.1
B 12 111 14534 119.08 607 591 117.1
C 15 214 256670 1859.68 594 597 137.7
C 9 187 105907 764.79 594 597 137.7
C 3 110 41564 297.51 594 597 137.7
D 12 235 9227707 88249.56 431 419 104.6
D 2 249 144554 1378.5 431 419 104.6
D 13 249 107810 1027.08 431 419 104.6

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