ASTROSAT CZTI

Data Quality Report

Orbit 15276

Creation date: 2024-06-27T17:06:13.349216
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/AS1A04_207T01_9000002254_15276cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15276cztM0_level2_quad_clean.evt
Size (bytes)524,232,00082,249,920
Size499.9 MB 78.4 MB
Events in quadrant A3,675,333491,661
Events in quadrant B3,860,870498,068
Events in quadrant C3,957,161497,694
Events in quadrant D3,864,571471,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161133
B0162522
C0160482
D0170482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76361131.479832%
B76361501.964379%
C7636911.191723%
D76361742.278680%

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 8307 7639 2 2 0.02% 0.03%
B 8307 7640 10 10 0.12% 0.13%
C 8307 7640 0 0 0.00% 0.00%
D 8307 7640 69 69 0.83% 0.90%

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 12 189 89907 479.33 911 889 185.7
A 9 143 69406 368.94 911 889 185.7
A 13 248 11861 59.08 911 889 185.7
B 0 219 133778 749.79 915 892 177.2
B 0 189 41788 230.75 915 892 177.2
B 0 205 30179 165.25 915 892 177.2
C 3 233 486134 2318.08 890 893 209.3
C 13 61 6354 26.09 890 893 209.3
C 8 222 3405 12.0 890 893 209.3
D 2 33 292252 1344.63 881 852 216.7
D 7 38 187005 858.98 881 852 216.7
D 2 234 32742 147.15 881 852 216.7

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