ASTROSAT CZTI

Data Quality Report

Orbit 41991

Creation date: 2024-06-27T22:35:26.609246
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_104T01_9000005728_41991cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41991cztM0_level2_quad_clean.evt
Size (bytes)367,378,56073,785,600
Size350.4 MB 70.4 MB
Events in quadrant A2,278,446494,214
Events in quadrant B2,041,056503,856
Events in quadrant C2,070,136491,743
Events in quadrant D6,849,499419,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097331
B095211
C092941
D0234991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A462970.151221%
B462950.108015%
C462950.108015%
D462952011.233528%

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 4629 4629 3 3 0.06% 0.06%
B 4629 4629 2 2 0.04% 0.04%
C 4629 4629 0 0 0.00% 0.00%
D 4629 4629 741 741 16.01% 16.01%

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 388626 3817.18 485 474 101.7
A 15 235 6807 62.28 485 474 101.7
A 15 223 6564 59.89 485 474 101.7
B 5 255 85003 895.05 482 467 94.4
B 0 190 38967 407.63 482 467 94.4
B 12 111 12298 125.26 482 467 94.4
C 15 214 187808 1656.66 478 481 113.1
C 8 229 9665 81.22 478 481 113.1
C 15 111 4998 39.95 478 481 113.1
D 1 52 4633121 40834.04 462 448 113.5
D 13 249 184171 1619.4 462 448 113.5
D 2 249 122558 1076.32 462 448 113.5

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