ASTROSAT CZTI

Data Quality Report

Orbit 48185

Creation date: 2024-08-26T10:02:39.824523
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_065T05_9000006412_48185cztM0_level2.fits modeM0/AS1A13_065T05_9000006412_48185cztM0_level2_quad_clean.evt
Size (bytes)453,398,40089,544,960
Size432.4 MB 85.4 MB
Events in quadrant A7,723,928762,375
Events in quadrant B1,136,68544,011
Events in quadrant C3,275,795757,448
Events in quadrant D4,130,902687,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273492
B070122
C0140532
D0165304

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65485207.941356%
B6548654799.984728%
C6548931.420281%
D65472253.436689%

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 7743 6549 183 183 2.36% 2.79%
B 7742 6547 0 0 0.00% 0.00%
C 7743 6549 43 43 0.56% 0.66%
D 7742 6548 125 125 1.61% 1.91%

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 10 83 4436212 27437.82 780 764 161.7
A 13 248 257878 1590.51 780 764 161.7
A 13 254 12108 70.17 780 764 161.7
B 2 177 905349 79581.79 46 45 11.4
B 4 21 19575 1716.81 46 45 11.4
B 0 200 19025 1668.46 46 45 11.4
C 12 2 168011 920.28 776 782 181.7
C 14 254 55945 303.57 776 782 181.7
C 12 250 12834 66.32 776 782 181.7
D 2 165 352454 1801.17 776 753 195.3
D 5 222 195283 996.25 776 753 195.3
D 2 249 143572 731.42 776 753 195.3

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