ASTROSAT CZTI

Data Quality Report

Orbit 30261

Creation date: 2024-06-27T20:12:49.446016
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/AS1A10_007T01_9000004350_30261cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30261cztM0_level2_quad_clean.evt
Size (bytes)2,244,401,280209,401,920
Size2.1 GB 199.7 MB
Events in quadrant A9,481,2091,376,660
Events in quadrant B37,797,346958,100
Events in quadrant C9,378,0361,366,064
Events in quadrant D10,058,0211,352,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401616
B01249004
C0392994
D0416964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186562461.318611%
B186571375873.741759%
C186574442.379804%
D186571520.814708%

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 20452 18657 41 41 0.20% 0.22%
B 20452 18658 11684 11684 57.13% 62.62%
C 20453 18659 11 11 0.05% 0.06%
D 20453 18661 31 31 0.15% 0.17%

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 14 239 671366 1470.93 2270 2215 454.9
A 8 192 40899 85.03 2270 2215 454.9
A 13 254 34924 71.9 2270 2215 454.9
B 6 36 27804364 102945.74 1402 1362 270.1
B 6 159 3440146 12732.73 1402 1362 270.1
B 4 80 959448 3547.49 1402 1362 270.1
C 14 238 414580 799.42 2193 2207 515.8
C 3 233 256967 493.88 2193 2207 515.8
C 14 254 94576 179.07 2193 2207 515.8
D 1 52 637110 1208.91 2215 2161 525.2
D 8 195 532319 1009.39 2215 2161 525.2
D 2 250 153365 287.88 2215 2161 525.2

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