ASTROSAT CZTI

Data Quality Report

Orbit 51628

Creation date: 2025-04-15T13:07:59.937667
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/AS1A13_037T05_9000006460_51628cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51628cztM0_level2_quad_clean.evt
Size (bytes)549,311,040102,775,680
Size523.9 MB 98.0 MB
Events in quadrant A6,955,592618,575
Events in quadrant B4,108,291723,725
Events in quadrant C4,259,085653,470
Events in quadrant D4,455,746617,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256204
B0170342
C0176352
D0182102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A715395313.323081%
B71532683.746680%
C71532393.341255%
D71531882.628268%

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 7928 7154 583 583 7.35% 8.15%
B 7928 7154 49 49 0.62% 0.68%
C 7928 7154 116 116 1.46% 1.62%
D 7928 7154 110 110 1.39% 1.54%

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 7 64 1913546 10159.46 772 753 188.3
A 12 3 1135510 6027.06 772 753 188.3
A 12 250 257635 1364.38 772 753 188.3
B 5 185 121660 706.11 797 771 171.2
B 0 213 113846 660.47 797 771 171.2
B 10 44 107695 624.54 797 771 171.2
C 14 245 257564 1203.76 782 776 213.3
C 15 189 202989 947.92 782 776 213.3
C 13 3 163186 761.34 782 776 213.3
D 8 176 466080 2154.15 781 753 216.0
D 3 12 315131 1455.36 781 753 216.0
D 1 3 162741 749.9 781 753 216.0

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