ASTROSAT CZTI

Data Quality Report

Orbit 45129

Creation date: 2024-06-27T23:09:45.910590
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/AS1A13_017T02_9000006046_45129cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45129cztM0_level2_quad_clean.evt
Size (bytes)631,523,52098,418,240
Size602.3 MB 93.9 MB
Events in quadrant A10,268,260388,683
Events in quadrant B3,612,446750,790
Events in quadrant C3,338,972726,670
Events in quadrant D5,626,402638,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352601
B0151721
C0146552
D0213111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6826352351.611485%
B68262313.384120%
C68261892.768825%
D68264997.310284%

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 7426 6826 1766 1766 23.78% 25.87%
B 7426 6827 45 45 0.61% 0.66%
C 7426 6827 42 42 0.57% 0.62%
D 7426 6827 297 297 4.00% 4.35%

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 15 223 6527213 57771.96 541 528 113.0
A 10 83 1625433 14383.1 541 528 113.0
A 0 243 10636 89.47 541 528 113.0
B 4 170 189211 1191.71 791 767 158.1
B 5 255 107241 673.34 791 767 158.1
B 0 155 67195 420.09 791 767 158.1
C 14 254 190541 1020.38 787 791 186.0
C 12 250 22363 116.0 787 791 186.0
C 1 3 20755 107.36 787 791 186.0
D 13 249 846204 4340.01 771 746 194.8
D 9 49 389994 1998.14 771 746 194.8
D 1 47 207145 1059.51 771 746 194.8

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