ASTROSAT CZTI

Data Quality Report

Orbit 39765

Creation date: 2024-06-27T22:08:44.004983
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_022T01_9000005494_39765cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39765cztM0_level2_quad_clean.evt
Size (bytes)395,081,28098,346,240
Size376.8 MB 93.8 MB
Events in quadrant A3,669,285677,316
Events in quadrant B2,755,564703,175
Events in quadrant C3,809,014652,283
Events in quadrant D3,981,157576,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140752
B0113191
C0148921
D0151671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52692124.023534%
B5269360.683242%
C5269340.645284%
D52693817.230974%

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 7363 5269 134 134 1.82% 2.54%
B 7363 5270 22 22 0.30% 0.42%
C 7363 5270 27 27 0.37% 0.51%
D 7363 5270 321 321 4.36% 6.09%

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 13 248 521672 4069.68 634 624 128.0
A 10 83 467164 3643.94 634 624 128.0
A 13 210 108898 845.68 634 624 128.0
B 5 172 131831 1098.26 632 615 119.5
B 5 255 43988 363.03 632 615 119.5
B 0 190 39049 321.69 632 615 119.5
C 15 208 1116518 7844.94 615 620 142.2
C 15 214 218132 1529.14 615 620 142.2
C 3 233 44803 310.61 615 620 142.2
D 12 233 668543 4512.9 603 585 148.0
D 12 227 295874 1995.05 603 585 148.0
D 13 249 191933 1292.8 603 585 148.0

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