ASTROSAT CZTI

Data Quality Report

Orbit 36995

Creation date: 2024-06-27T21:34:00.882113
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_079T01_9000005254_36995cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36995cztM0_level2_quad_clean.evt
Size (bytes)492,258,24081,046,080
Size469.5 MB 77.3 MB
Events in quadrant A2,823,353529,602
Events in quadrant B5,114,702509,772
Events in quadrant C3,013,144527,742
Events in quadrant D3,580,306498,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119054
B0188452
C0122392
D0141752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5549170.306362%
B554963811.497567%
C5549360.648766%
D55491893.406019%

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 8867 5552 6 6 0.07% 0.11%
B 8867 5552 473 473 5.33% 8.52%
C 8867 5552 29 29 0.33% 0.52%
D 8867 5552 158 158 1.78% 2.85%

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 225495 1702.37 662 650 132.1
A 9 143 29092 215.34 662 650 132.1
A 13 6 9579 67.6 662 650 132.1
B 5 184 2160046 17611.31 633 615 122.6
B 4 81 317002 2580.3 633 615 122.6
B 4 232 77283 625.27 633 615 122.6
C 15 214 240906 1605.22 642 647 149.7
C 0 10 70621 467.51 642 647 149.7
C 0 207 51636 340.67 642 647 149.7
D 2 250 621478 3962.86 635 619 156.7
D 1 52 263657 1678.94 635 619 156.7
D 2 120 80569 510.31 635 619 156.7

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