ASTROSAT CZTI

Data Quality Report

Orbit 15991

Creation date: 2024-06-27T17:16:12.665496
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/AS1G08_046T09_9000002358_15991cztM0_level2.evt modeM0/AS1G08_046T09_9000002358_15991cztM0_level2_quad_clean.evt
Size (bytes)434,206,08096,932,160
Size414.1 MB 92.4 MB
Events in quadrant A3,132,391638,852
Events in quadrant B3,389,248642,598
Events in quadrant C3,008,706607,463
Events in quadrant D3,192,189607,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135432
B0140701
C0129931
D0137641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62851231.957041%
B6285721.145585%
C6285600.954654%
D6285801.272872%

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 7386 6286 64 64 0.87% 1.02%
B 7386 6286 23 23 0.31% 0.37%
C 7386 6286 0 0 0.00% 0.00%
D 7386 6286 40 40 0.54% 0.64%

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 15 157 167691 1097.33 758 743 152.1
A 15 239 17365 109.25 758 743 152.1
A 13 210 16978 106.71 758 743 152.1
B 7 220 150035 1060.72 755 737 140.8
B 10 245 98235 692.7 755 737 140.8
B 3 209 38585 268.9 755 737 140.8
C 14 238 110712 654.98 722 726 167.9
C 3 233 63347 372.91 722 726 167.9
C 0 207 20642 118.6 722 726 167.9
D 10 70 110580 607.29 741 717 180.9
D 2 120 74589 408.34 741 717 180.9
D 2 152 42144 229.0 741 717 180.9

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