ASTROSAT CZTI

Data Quality Report

Orbit 15439

Creation date: 2024-06-27T17:08:32.510832
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/AS1T02_080T01_9000002276_15439cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15439cztM0_level2_quad_clean.evt
Size (bytes)483,183,36069,485,760
Size460.8 MB 66.3 MB
Events in quadrant A3,598,634406,564
Events in quadrant B3,281,589419,770
Events in quadrant C3,545,352420,945
Events in quadrant D3,762,435399,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150040
B0138640
C0144820
D0156440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65911161.759976%
B6591650.986193%
C6590590.895296%
D6487911.402806%

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 7626 6591 23 23 0.30% 0.35%
B 7626 6592 3 3 0.04% 0.05%
C 7625 6591 0 0 0.00% 0.00%
D 7625 6489 34 34 0.45% 0.52%

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 14 238 229189 1426.99 797 781 160.1
A 15 249 198330 1234.2 797 781 160.1
A 14 237 87994 544.87 797 781 160.1
B 0 213 35828 227.48 806 785 154.0
B 0 189 33184 210.32 806 785 154.0
B 3 209 21350 133.5 806 785 154.0
C 3 233 455575 2491.34 789 793 182.5
C 13 61 5739 27.09 789 793 182.5
C 14 225 4552 20.59 789 793 182.5
D 5 222 390711 2086.85 771 749 186.9
D 13 122 139805 744.15 771 749 186.9
D 1 52 135785 722.63 771 749 186.9

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