ASTROSAT CZTI

Data Quality Report

Orbit 19772

Creation date: 2024-06-27T18:06:50.826513
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/AS1A05_104T08_9000002954_19772cztM0_level2.evt modeM0/AS1A05_104T08_9000002954_19772cztM0_level2_quad_clean.evt
Size (bytes)560,139,84092,191,680
Size534.2 MB 87.9 MB
Events in quadrant A3,171,440618,272
Events in quadrant B3,305,000638,111
Events in quadrant C5,934,401531,949
Events in quadrant D4,132,862570,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131562
B0134672
C0217182
D0161862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191570.920691%
B6191891.437571%
C619194215.215636%
D61913285.298013%

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 7551 6192 0 0 0.00% 0.00%
B 7551 6192 20 20 0.26% 0.32%
C 7551 6192 664 664 8.79% 10.72%
D 7551 6191 272 272 3.60% 4.39%

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 6 16 29925 178.01 814 798 163.6
A 8 192 7252 39.44 814 798 163.6
A 0 226 6941 37.54 814 798 163.6
B 3 64 54763 348.46 819 800 154.9
B 12 111 18085 111.61 819 800 154.9
B 11 111 15711 96.28 819 800 154.9
C 3 233 2960106 17363.91 731 737 170.4
C 14 238 114781 669.14 731 737 170.4
C 4 175 7921 42.15 731 737 170.4
D 7 238 1108797 5919.36 765 745 187.2
D 12 218 53663 282.69 765 745 187.2
D 2 184 29893 155.71 765 745 187.2

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