ASTROSAT CZTI

Data Quality Report

Orbit 35856

Creation date: 2022-06-08T18:46:58.404773
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_080T01_9000005146_35856cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35856cztM0_level2_quad_clean.evt
Size (bytes)420,269,76056,586,240
Size400.8 MB 54.0 MB
Events in quadrant A2,930,630351,149
Events in quadrant B3,247,381340,770
Events in quadrant C3,105,115338,107
Events in quadrant D3,098,810325,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116713
B0126582
C0119282
D0122782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509560.117763%
B50951142.237488%
C50951292.531894%
D5095751.472031%

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 7218 5096 2 2 0.03% 0.04%
B 7218 5096 81 81 1.12% 1.59%
C 7218 5096 112 112 1.55% 2.20%
D 7218 5096 55 55 0.76% 1.08%

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 160180 1167.33 685 675 136.6
A 15 169 78751 571.39 685 675 136.6
A 7 48 24802 176.57 685 675 136.6
B 5 172 361686 2924.7 665 653 123.4
B 0 213 189396 1528.99 665 653 123.4
B 0 190 39956 318.39 665 653 123.4
C 0 10 310031 2098.48 644 651 147.4
C 15 214 212275 1435.42 644 651 147.4
C 1 23 31636 210.17 644 651 147.4
D 13 249 166270 1022.1 658 641 162.0
D 8 195 92066 564.19 658 641 162.0
D 2 250 80858 495.02 658 641 162.0

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