ASTROSAT CZTI

Data Quality Report

Orbit 39531

Creation date: 2024-06-27T22:05:46.124726
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_9000005488_39531cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39531cztM0_level2_quad_clean.evt
Size (bytes)361,575,36086,771,520
Size344.8 MB 82.8 MB
Events in quadrant A3,133,914589,684
Events in quadrant B2,308,717614,836
Events in quadrant C4,973,750522,000
Events in quadrant D2,569,458542,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126412
B0105071
C0182811
D0112001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51171362.657807%
B5117130.254055%
C511762312.175103%
D5117390.762165%

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 6941 5118 107 107 1.54% 2.09%
B 6941 5118 8 8 0.12% 0.16%
C 6941 5118 546 546 7.87% 10.67%
D 6941 5118 29 29 0.42% 0.57%

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 359863 3144.88 563 551 114.3
A 13 248 303564 2652.12 563 551 114.3
A 15 222 282405 2466.93 563 551 114.3
B 15 85 67353 610.58 566 550 109.4
B 4 81 17443 154.4 566 550 109.4
B 12 111 13298 116.52 566 550 109.4
C 9 187 2644630 21080.26 538 540 125.4
C 15 214 215768 1715.93 538 540 125.4
C 0 10 10699 80.99 538 540 125.4
D 13 249 154961 1139.43 558 542 135.5
D 12 227 123599 908.01 558 542 135.5
D 2 249 62017 453.61 558 542 135.5

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