ASTROSAT CZTI

Data Quality Report

Orbit 36657

Creation date: 2024-06-27T21:29:52.240422
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/AS1A11_049T05_9000005232_36657cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36657cztM0_level2_quad_clean.evt
Size (bytes)477,607,68072,299,520
Size455.5 MB 69.0 MB
Events in quadrant A2,938,818462,245
Events in quadrant B2,847,996461,902
Events in quadrant C3,439,916439,332
Events in quadrant D4,841,708417,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123933
B0121282
C0138342
D0183652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845200.342173%
B5845110.188195%
C58451803.079555%
D58453005.132592%

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 7158 5846 6 6 0.08% 0.10%
B 7158 5846 1 1 0.01% 0.02%
C 7158 5846 143 143 2.00% 2.45%
D 7158 5846 270 270 3.77% 4.62%

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 220745 1606.2 680 667 137.0
A 9 143 50805 365.92 680 667 137.0
A 2 247 13358 92.62 680 667 137.0
B 0 221 40891 310.7 674 658 129.5
B 5 255 39339 298.71 674 658 129.5
B 0 190 39266 298.15 674 658 129.5
C 0 10 283126 1875.6 647 651 150.6
C 15 214 264871 1754.39 647 651 150.6
C 15 159 253565 1679.32 647 651 150.6
D 7 223 1032259 6563.39 647 630 157.2
D 12 235 510839 3246.03 647 630 157.2
D 2 250 227064 1440.61 647 630 157.2

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