ASTROSAT CZTI

Data Quality Report

Orbit 38373

Creation date: 2024-06-27T21:52:03.426002
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_006T08_9000005378_38373cztM0_level2.fits modeM0/AS1A12_006T08_9000005378_38373cztM0_level2_quad_clean.evt
Size (bytes)516,896,64092,047,680
Size493.0 MB 87.8 MB
Events in quadrant A3,207,328668,984
Events in quadrant B3,096,231682,137
Events in quadrant C2,691,276655,353
Events in quadrant D9,733,407414,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129193
B0124842
C0112072
D0324732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229500.956206%
B52291142.180149%
C5229110.210365%
D5229198237.903997%

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 7111 5230 29 29 0.41% 0.55%
B 7111 5230 57 57 0.80% 1.09%
C 7111 5230 6 6 0.08% 0.11%
D 7111 5230 2304 2304 32.40% 44.05%

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 387424 3036.32 636 624 127.4
A 12 16 149424 1168.06 636 624 127.4
A 9 143 131239 1025.31 636 624 127.4
B 0 183 438057 3686.37 631 617 118.7
B 0 189 79813 667.4 631 617 118.7
B 4 21 27096 223.14 631 617 118.7
C 15 214 222510 1562.49 616 621 142.0
C 14 254 39093 270.91 616 621 142.0
C 0 10 12848 86.1 616 621 142.0
D 10 203 6637780 46862.5 572 555 141.6
D 12 235 272165 1917.72 572 555 141.6
D 12 227 193340 1361.17 572 555 141.6

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