ASTROSAT CZTI

Data Quality Report

Orbit 20772

Creation date: 2024-06-27T18:19:25.636941
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_013T01_9000003070_20772cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20772cztM0_level2_quad_clean.evt
Size (bytes)479,750,40099,195,840
Size457.5 MB 94.6 MB
Events in quadrant A2,971,476677,619
Events in quadrant B3,227,386659,105
Events in quadrant C2,892,837639,257
Events in quadrant D5,043,687622,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123621
B0131101
C0121911
D0192091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5800861.482759%
B58011212.085847%
C5801941.620410%
D58012945.068092%

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 7075 5800 1 1 0.01% 0.02%
B 7076 5802 24 24 0.34% 0.41%
C 7076 5801 0 0 0.00% 0.00%
D 7076 5801 208 208 2.94% 3.59%

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 5 203 24389 155.05 763 749 152.5
A 5 16 18031 113.35 763 749 152.5
A 0 226 6806 39.73 763 749 152.5
B 7 220 121987 868.85 738 722 139.6
B 0 182 53981 381.6 738 722 139.6
B 0 190 33372 233.93 738 722 139.6
C 14 238 114687 698.05 711 717 163.3
C 13 61 5131 27.04 711 717 163.3
C 7 247 4277 21.8 711 717 163.3
D 1 20 1451844 8363.36 726 705 173.5
D 12 227 399549 2298.66 726 705 173.5
D 1 52 296593 1705.29 726 705 173.5

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