ASTROSAT CZTI

Data Quality Report

Orbit 47823

Creation date: 2024-08-01T12:06:58.854096
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_081T01_9000006354_47823cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47823cztM0_level2_quad_clean.evt
Size (bytes)536,431,680103,383,360
Size511.6 MB 98.6 MB
Events in quadrant A6,747,175722,162
Events in quadrant B3,158,108753,039
Events in quadrant C2,720,620714,809
Events in quadrant D6,729,217489,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243572
B0139222
C0131052
D0246215

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64642173.357054%
B6465540.835267%
C646560.092807%
D6464170726.407797%

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 7669 6465 57 57 0.74% 0.88%
B 7670 6465 10 10 0.13% 0.15%
C 7670 6466 1 1 0.01% 0.02%
D 7668 6464 1517 1517 19.78% 23.47%

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 3807397 26181.99 706 691 145.4
A 0 31 168196 1152.08 706 691 145.4
A 13 248 30730 206.6 706 691 145.4
B 0 200 207052 1517.63 709 686 136.0
B 4 171 41116 297.33 709 686 136.0
B 12 3 32461 233.68 709 686 136.0
C 14 254 21290 126.84 692 696 162.4
C 13 61 4646 24.33 692 696 162.4
C 3 233 2686 12.26 692 696 162.4
D 12 33 2877505 19861.61 581 563 144.8
D 2 249 645934 4455.46 581 563 144.8
D 12 2 501182 3456.13 581 563 144.8

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