ASTROSAT CZTI

Data Quality Report

Orbit 47850

Creation date: 2024-08-03T09:22:53.814941
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/AS1A13_073T04_9000006358_47850cztM0_level2.fits modeM0/AS1A13_073T04_9000006358_47850cztM0_level2_quad_clean.evt
Size (bytes)403,790,40077,296,320
Size385.1 MB 73.7 MB
Events in quadrant A4,779,462536,302
Events in quadrant B2,227,656566,315
Events in quadrant C2,260,247526,911
Events in quadrant D5,295,390364,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173111
B0101951
C0105671
D0194303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49361452.937601%
B4936370.749595%
C4936450.911669%
D4935122824.883485%

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 6066 4936 49 49 0.81% 0.99%
B 6066 4936 0 0 0.00% 0.00%
C 6066 4937 26 26 0.43% 0.53%
D 6065 4935 1230 1230 20.28% 24.92%

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 2716153 24504.94 532 522 110.8
A 7 3 12515 108.22 532 522 110.8
A 3 137 6108 50.41 532 522 110.8
B 0 198 25353 232.98 539 521 106.6
B 4 21 20084 183.54 539 521 106.6
B 5 255 15634 141.79 539 521 106.6
C 1 3 193179 1562.86 522 526 123.3
C 12 2 21099 166.89 522 526 123.3
C 14 254 9289 71.09 522 526 123.3
D 2 165 1834325 16091.67 457 443 114.0
D 2 37 982138 8614.03 457 443 114.0
D 12 2 375243 3288.74 457 443 114.0

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