ASTROSAT CZTI

Data Quality Report

Orbit 38149

Creation date: 2024-06-27T21:49:01.231028
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/AS1A07_093T02_9000005368_38149cztM0_level2.fits modeM0/AS1A07_093T02_9000005368_38149cztM0_level2_quad_clean.evt
Size (bytes)424,857,60097,404,480
Size405.2 MB 92.9 MB
Events in quadrant A3,247,088676,419
Events in quadrant B4,708,463600,267
Events in quadrant C2,825,783657,883
Events in quadrant D4,477,342594,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131253
B0180262
C0121182
D0176172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601960.099684%
B601979313.174946%
C601940.066456%
D60191482.458880%

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 7302 6020 2 2 0.03% 0.03%
B 7302 6020 751 751 10.28% 12.48%
C 7302 6020 2 2 0.03% 0.03%
D 7302 6020 156 156 2.14% 2.59%

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 410991 3003.91 668 655 136.6
A 15 223 128757 937.78 668 655 136.6
A 12 16 48234 348.31 668 655 136.6
B 5 184 1915259 16306.43 608 591 117.4
B 0 229 152699 1295.44 608 591 117.4
B 4 171 118925 1007.8 608 591 117.4
C 15 214 253478 1681.75 650 655 150.3
C 3 233 13362 84.53 650 655 150.3
C 2 16 10189 63.42 650 655 150.3
D 1 20 435756 2785.34 641 623 156.2
D 1 52 301913 1928.59 641 623 156.2
D 12 235 264922 1691.81 641 623 156.2

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