ASTROSAT CZTI

Data Quality Report

Orbit 36569

Creation date: 2024-06-27T21:28:33.712686
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_097T17_9000005222_36569cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36569cztM0_level2_quad_clean.evt
Size (bytes)444,323,52069,252,480
Size423.7 MB 66.0 MB
Events in quadrant A2,799,721437,293
Events in quadrant B3,178,452434,713
Events in quadrant C3,202,874424,535
Events in quadrant D3,899,849413,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118743
B0131092
C0128542
D0152882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5531220.397758%
B5531270.488158%
C55311873.380944%
D55311873.380944%

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 7025 5532 11 11 0.16% 0.20%
B 7025 5532 5 5 0.07% 0.09%
C 7025 5532 134 134 1.91% 2.42%
D 7025 5532 178 178 2.53% 3.22%

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 215912 1695.08 628 615 127.0
A 15 223 121870 954.66 628 615 127.0
A 9 143 28697 221.1 628 615 127.0
B 5 172 499638 4179.03 622 606 119.4
B 5 255 56745 470.12 622 606 119.4
B 0 229 51091 422.77 622 606 119.4
C 0 10 506072 3576.58 605 612 141.3
C 15 214 235019 1658.64 605 612 141.3
C 14 254 78518 551.25 605 612 141.3
D 12 16 614581 4139.95 612 596 148.3
D 12 6 210962 1418.45 612 596 148.3
D 12 17 159636 1072.37 612 596 148.3

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