ASTROSAT CZTI

Data Quality Report

Orbit 37909

Creation date: 2024-06-27T21:46:01.211511
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/AS1T05_059T01_9000005354_37909cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37909cztM0_level2_quad_clean.evt
Size (bytes)487,558,08067,501,440
Size465.0 MB 64.4 MB
Events in quadrant A2,907,998430,758
Events in quadrant B3,007,388438,336
Events in quadrant C2,833,567440,775
Events in quadrant D5,649,498355,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118173
B0123142
C0116142
D0204322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5410120.221811%
B5410350.646950%
C5410260.480591%
D5410125923.271719%

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 8934 5412 7 7 0.08% 0.13%
B 8934 5412 13 13 0.15% 0.24%
C 8934 5412 16 16 0.18% 0.30%
D 8934 5411 728 728 8.15% 13.45%

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 346235 2658.66 640 627 130.0
A 12 227 44819 339.95 640 627 130.0
A 12 189 17377 128.85 640 627 130.0
B 5 184 120389 984.82 635 619 121.6
B 0 229 118338 967.95 635 619 121.6
B 5 172 90661 740.38 635 619 121.6
C 15 214 233521 1615.85 626 631 144.1
C 0 10 104313 719.37 626 631 144.1
C 14 254 41973 286.84 626 631 144.1
D 1 52 2085846 15541.35 552 536 134.2
D 2 249 535961 3990.4 552 536 134.2
D 12 233 436823 3251.55 552 536 134.2

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