ASTROSAT CZTI

Data Quality Report

Orbit 37732

Creation date: 2024-06-27T21:43:44.760327
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/AS1A11_106T02_9000005344_37732cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37732cztM0_level2_quad_clean.evt
Size (bytes)757,054,08067,518,720
Size722.0 MB 64.4 MB
Events in quadrant A7,771,442329,164
Events in quadrant B2,783,231460,818
Events in quadrant C2,860,897461,257
Events in quadrant D9,128,190394,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270743
B0121822
C0121042
D0310272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5686167729.493493%
B5686520.914527%
C5686330.580373%
D5686201735.473092%

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 7239 5687 1674 1674 23.12% 29.44%
B 7238 5685 28 28 0.39% 0.49%
C 7238 5685 31 31 0.43% 0.55%
D 7238 5685 2197 2197 30.35% 38.65%

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 15 222 5328088 50606.51 524 514 105.3
A 10 83 253099 2399.3 524 514 105.3
A 9 143 76735 724.02 524 514 105.3
B 5 255 152396 1279.02 619 602 118.7
B 5 172 44687 371.46 619 602 118.7
B 0 229 31412 259.61 619 602 118.7
C 15 214 242417 1698.54 607 609 142.4
C 0 10 141440 989.24 607 609 142.4
C 14 254 27943 192.0 607 609 142.4
D 12 227 5015900 39545.31 519 505 126.8
D 2 249 1131431 8917.11 519 505 126.8
D 5 222 407308 3207.55 519 505 126.8

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