ASTROSAT CZTI

Data Quality Report

Orbit 33515

Creation date: 2024-06-27T20:49:40.691840
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_060T01_9000004804_33515cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33515cztM0_level2_quad_clean.evt
Size (bytes)565,896,96072,184,320
Size539.7 MB 68.8 MB
Events in quadrant A2,648,304456,833
Events in quadrant B4,289,222455,226
Events in quadrant C4,308,942441,821
Events in quadrant D5,497,557424,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116883
B0164632
C0166062
D0202752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5825110.188841%
B58255178.875536%
C58252764.738197%
D58254437.605150%

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 7167 5826 0 0 0.00% 0.00%
B 7167 5826 355 355 4.95% 6.09%
C 7167 5826 219 219 3.06% 3.76%
D 7166 5825 381 381 5.32% 6.54%

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 13 254 9317 62.97 682 667 137.4
A 13 6 8519 57.16 682 667 137.4
A 3 137 6999 46.1 682 667 137.4
B 5 255 843685 6562.74 659 639 128.5
B 5 172 558704 4344.29 659 639 128.5
B 4 251 218824 1698.47 659 639 128.5
C 3 233 743697 4859.96 654 659 152.9
C 14 254 368252 2404.3 654 659 152.9
C 15 214 267922 1748.08 654 659 152.9
D 8 195 911560 5698.0 647 627 159.9
D 2 250 780981 4881.21 647 627 159.9
D 2 120 685921 4286.6 647 627 159.9

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