ASTROSAT CZTI

Data Quality Report

Orbit 47056

Creation date: 2024-06-27T23:31:12.787284
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/AS1C09_005T01_9000006296_47056cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47056cztM0_level2_quad_clean.evt
Size (bytes)2,791,808,640587,917,440
Size2.6 GB 560.7 MB
Events in quadrant A35,012,7693,927,067
Events in quadrant B26,333,1663,835,182
Events in quadrant C16,443,7713,974,249
Events in quadrant D22,771,6763,586,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07340
B07340
C07340
D07340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01281197
B01021709
C0754947
D0925967

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3608312353.422664%
B3608231918.843745%
C360833991.105784%
D3608312013.328437%

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 43323 36090 99 99 0.23% 0.27%
B 43322 36089 1828 1828 4.22% 5.07%
C 43323 36090 105 105 0.24% 0.29%
D 43323 36090 753 753 1.74% 2.09%

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 18663760 22660.4 4034 3947 823.5
A 13 248 478683 576.52 4034 3947 823.5
A 9 191 194763 231.73 4034 3947 823.5
B 3 112 7983801 10716.87 3896 3778 744.6
B 5 172 1407076 1884.58 3896 3778 744.6
B 4 171 564395 752.89 3896 3778 744.6
C 14 254 466729 502.04 3997 4014 921.7
C 12 2 266544 284.84 3997 4014 921.7
C 12 250 78198 80.49 3997 4014 921.7
D 1 52 4955534 5057.77 3984 3872 979.0
D 13 249 804614 817.9 3984 3872 979.0
D 14 34 410538 415.38 3984 3872 979.0

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