ASTROSAT CZTI

Data Quality Report

Orbit 41082

Creation date: 2024-06-27T22:24:13.140862
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_095T02_9000005596_41082cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41082cztM0_level2_quad_clean.evt
Size (bytes)378,034,56092,206,080
Size360.5 MB 87.9 MB
Events in quadrant A3,323,125639,182
Events in quadrant B4,095,080625,911
Events in quadrant C3,108,245603,600
Events in quadrant D3,070,174565,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132153
B0154072
C0122862
D0124442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5107340.665753%
B51073206.265910%
C5107651.272763%
D5107821.605639%

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 7080 5108 26 26 0.37% 0.51%
B 7080 5108 290 290 4.10% 5.68%
C 7080 5108 71 71 1.00% 1.39%
D 7080 5108 66 66 0.93% 1.29%

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 531360 4211.1 612 602 126.0
A 0 247 237532 1879.83 612 602 126.0
A 12 189 136735 1080.09 612 602 126.0
B 0 186 943131 8202.16 595 579 114.9
B 5 255 628989 5468.47 595 579 114.9
B 0 190 144944 1256.28 595 579 114.9
C 14 254 483279 3581.22 583 589 134.8
C 15 214 219683 1625.52 583 589 134.8
C 0 10 99930 737.04 583 589 134.8
D 2 249 283749 1988.25 592 577 142.4
D 13 249 178533 1249.49 592 577 142.4
D 13 171 61047 424.58 592 577 142.4

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