ASTROSAT CZTI

Data Quality Report

Orbit 40430

Creation date: 2024-06-27T22:16:00.904747
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/AS1A12_022T01_9000005540_40430cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40430cztM0_level2_quad_clean.evt
Size (bytes)337,150,08096,373,440
Size321.5 MB 91.9 MB
Events in quadrant A2,915,200670,125
Events in quadrant B2,818,718685,461
Events in quadrant C2,745,848634,929
Events in quadrant D3,583,026553,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118313
B0113732
C0112622
D0140632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5356160.298730%
B5356120.224048%
C5356480.896191%
D53564718.793876%

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 7329 5357 3 3 0.04% 0.06%
B 7329 5357 3 3 0.04% 0.06%
C 7329 5357 40 40 0.55% 0.75%
D 7329 5357 120 120 1.64% 2.24%

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 465931 3641.66 631 619 127.8
A 13 252 7335 52.56 631 619 127.8
A 3 137 6818 48.52 631 619 127.8
B 3 112 252448 2162.09 621 606 116.5
B 4 170 54224 460.32 621 606 116.5
B 5 255 39168 331.06 621 606 116.5
C 15 214 235458 1695.25 601 604 138.5
C 14 254 134469 966.28 601 604 138.5
C 5 250 14283 98.74 601 604 138.5
D 12 227 895160 6300.17 583 568 142.0
D 12 191 153158 1074.62 583 568 142.0
D 12 128 143888 1009.33 583 568 142.0

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