ASTROSAT CZTI

Data Quality Report

Orbit 51218

Creation date: 2025-03-18T05:04:22.297915
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/AS1C07_001T01_9000006454_51218cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51218cztM0_level2_quad_clean.evt
Size (bytes)519,845,76093,142,080
Size495.8 MB 88.8 MB
Events in quadrant A3,661,095622,779
Events in quadrant B4,335,700665,693
Events in quadrant C6,879,631520,715
Events in quadrant D3,869,947564,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154282
B0174582
C0248692
D0162482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961101.719825%
B63963024.721701%
C6396121418.980613%
D63962133.330206%

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 7556 6397 66 66 0.87% 1.03%
B 7556 6396 121 121 1.60% 1.89%
C 7556 6396 1169 1169 15.47% 18.28%
D 7556 6397 172 172 2.28% 2.69%

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 3 288129 1711.22 679 662 168.0
A 8 26 146445 867.81 679 662 168.0
A 5 240 104571 618.55 679 662 168.0
B 10 254 365128 2522.29 678 655 144.5
B 5 172 341704 2360.19 678 655 144.5
B 4 170 179106 1234.95 678 655 144.5
C 4 12 3281849 19337.44 612 607 169.7
C 13 3 314379 1849.16 612 607 169.7
C 10 252 308130 1812.33 612 607 169.7
D 3 12 291436 1581.82 651 626 183.8
D 11 176 189214 1025.8 651 626 183.8
D 8 176 168809 914.81 651 626 183.8

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