ASTROSAT CZTI

Data Quality Report

Orbit 37986

Creation date: 2024-06-27T21:46:59.453450
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/AS1A11_082T01_9000005356_37986cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37986cztM0_level2_quad_clean.evt
Size (bytes)379,238,40076,011,840
Size361.7 MB 72.5 MB
Events in quadrant A5,088,898489,663
Events in quadrant B2,529,401510,510
Events in quadrant C2,491,187503,380
Events in quadrant D3,547,642453,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186433
B0105532
C0102082
D0137362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49071152.343591%
B4907450.917057%
C4907100.203791%
D4907821.671082%

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 7000 4908 82 82 1.17% 1.67%
B 7000 4908 23 23 0.33% 0.47%
C 7000 4908 6 6 0.09% 0.12%
D 7000 4908 96 96 1.37% 1.96%

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 15 222 2241534 19276.27 578 567 116.3
A 10 83 361262 3102.61 578 567 116.3
A 12 16 124880 1069.31 578 567 116.3
B 5 172 153209 1387.07 576 561 110.1
B 5 184 64980 585.36 576 561 110.1
B 4 81 22566 199.95 576 561 110.1
C 15 214 213118 1619.18 569 573 131.3
C 14 254 38889 291.89 569 573 131.3
C 0 10 13199 96.19 569 573 131.3
D 12 233 775729 5640.45 566 551 137.4
D 1 47 91972 665.21 566 551 137.4
D 1 52 80589 582.38 566 551 137.4

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