ASTROSAT CZTI

Data Quality Report

Orbit 24519

Creation date: 2024-06-27T19:06:49.931560
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/AS1T03_183T01_9000003606_24519cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24519cztM0_level2_quad_clean.evt
Size (bytes)675,014,400123,912,000
Size643.7 MB 118.2 MB
Events in quadrant A3,633,253924,898
Events in quadrant B7,240,753759,848
Events in quadrant C3,781,768840,469
Events in quadrant D5,389,951816,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147881
B0254202
C0150161
D0201481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5875911.548936%
B5875188432.068085%
C58754086.944681%
D58753886.604255%

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 7180 5876 0 0 0.00% 0.00%
B 7180 5875 1359 1359 18.93% 23.13%
C 7180 5876 227 227 3.16% 3.86%
D 7180 5876 335 335 4.67% 5.70%

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 14 111 596811 3856.28 786 776 154.6
A 13 254 9224 54.66 786 776 154.6
A 0 226 6858 39.35 786 776 154.6
B 3 64 4692677 39140.82 648 635 119.9
B 0 190 14393 114.77 648 635 119.9
B 12 111 13321 105.83 648 635 119.9
C 2 16 712862 4384.66 710 716 162.4
C 10 9 176743 1083.79 710 716 162.4
C 14 238 116391 712.21 710 716 162.4
D 1 52 2539316 14854.51 721 701 170.9
D 9 1 63560 367.81 721 701 170.9
D 8 195 32432 185.67 721 701 170.9

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