ASTROSAT CZTI

Data Quality Report

Orbit 13180

Creation date: 2024-06-27T16:37:21.234411
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/AS1T02_012T02_9000001948_13180cztM0_level2.evt modeM0/AS1T02_012T02_9000001948_13180cztM0_level2_quad_clean.evt
Size (bytes)351,912,96049,792,320
Size335.6 MB 47.5 MB
Events in quadrant A2,528,879307,295
Events in quadrant B2,738,787295,868
Events in quadrant C1,993,416306,020
Events in quadrant D3,096,428287,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104292
B0109861
C089871
D0122151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4408501.134301%
B44082726.170599%
C4408240.544465%
D44083086.987296%

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 5144 4410 0 0 0.00% 0.00%
B 5144 4410 156 156 3.03% 3.54%
C 5144 4410 1 1 0.02% 0.02%
D 5144 4410 193 193 3.75% 4.38%

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 0 23 222090 2058.37 520 508 107.6
A 12 189 198816 1842.17 520 508 107.6
A 15 222 29236 266.87 520 508 107.6
B 4 239 647861 6527.09 509 495 99.2
B 3 64 29696 294.42 509 495 99.2
B 0 197 15187 148.13 509 495 99.2
C 15 208 12199 98.1 506 508 119.2
C 14 234 3698 26.77 506 508 119.2
C 13 61 3595 25.9 506 508 119.2
D 1 52 609954 5070.79 492 477 120.2
D 1 7 352853 2931.74 492 477 120.2
D 10 157 133131 1103.67 492 477 120.2

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