ASTROSAT CZTI

Data Quality Report

Orbit 38877

Creation date: 2024-06-27T21:57:42.543212
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_093T01_9000005410_38877cztM0_level2.fits modeM0/AS1A12_093T01_9000005410_38877cztM0_level2_quad_clean.evt
Size (bytes)365,751,36094,374,720
Size348.8 MB 90.0 MB
Events in quadrant A3,526,884625,881
Events in quadrant B2,768,418652,956
Events in quadrant C2,695,101626,046
Events in quadrant D4,111,927560,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140912
B0119101
C0114571
D0160431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56082374.226106%
B5608230.410128%
C5608110.196148%
D56082995.331669%

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 7281 5609 185 185 2.54% 3.30%
B 7281 5609 11 11 0.15% 0.20%
C 7281 5609 6 6 0.08% 0.11%
D 7281 5609 265 265 3.64% 4.72%

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 13 248 637410 4942.27 629 614 128.8
A 10 83 437698 3392.27 629 614 128.8
A 13 254 9566 69.48 629 614 128.8
B 4 171 153041 1247.85 629 610 122.2
B 5 184 44029 355.44 629 610 122.2
B 5 172 29646 237.7 629 610 122.2
C 15 214 232119 1590.5 620 624 145.5
C 2 16 15545 102.52 620 624 145.5
C 14 254 14880 97.95 620 624 145.5
D 2 249 531987 3632.16 608 595 146.3
D 1 47 306450 2090.58 608 595 146.3
D 12 227 225730 1538.84 608 595 146.3

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