ASTROSAT CZTI

Data Quality Report

Orbit 39285

Creation date: 2024-06-27T22:02:41.952623
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_025T12_9000005458_39285cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39285cztM0_level2_quad_clean.evt
Size (bytes)370,031,04097,159,680
Size352.9 MB 92.7 MB
Events in quadrant A3,129,962664,652
Events in quadrant B2,540,694689,601
Events in quadrant C2,729,292646,245
Events in quadrant D4,865,795553,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126213
B0112462
C0114412
D0183452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5545220.396754%
B5545130.234445%
C554550.090171%
D55454437.989179%

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 7398 5546 26 26 0.35% 0.47%
B 7398 5546 7 7 0.09% 0.13%
C 7398 5546 0 0 0.00% 0.00%
D 7398 5546 371 371 5.01% 6.69%

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 10 83 431301 3360.71 633 622 128.2
A 15 222 227994 1774.25 633 622 128.2
A 3 1 15988 119.91 633 622 128.2
B 5 184 41048 334.5 633 617 120.9
B 12 111 15139 120.15 633 617 120.9
B 11 111 13887 109.79 633 617 120.9
C 15 214 237004 1640.71 619 624 144.1
C 9 187 69437 477.63 619 624 144.1
C 8 222 4300 25.52 619 624 144.1
D 12 235 2086073 14256.08 597 581 146.3
D 14 52 166308 1132.88 597 581 146.3
D 5 222 115089 782.76 597 581 146.3

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