ASTROSAT CZTI

Data Quality Report

Orbit 38943

Creation date: 2024-06-27T21:58:28.099816
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_064T01_9000005416_38943cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38943cztM0_level2_quad_clean.evt
Size (bytes)349,220,16089,795,520
Size333.0 MB 85.6 MB
Events in quadrant A3,126,535593,979
Events in quadrant B2,520,666617,867
Events in quadrant C2,496,192600,481
Events in quadrant D4,363,017528,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126653
B0113322
C0108652
D0166022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54001082.000000%
B5400260.481481%
C540030.055556%
D54003165.851852%

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 7133 5401 91 91 1.28% 1.68%
B 7133 5401 10 10 0.14% 0.19%
C 7133 5401 0 0 0.00% 0.00%
D 7133 5401 314 314 4.40% 5.81%

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 421844 3589.03 581 569 117.4
A 9 143 207626 1764.01 581 569 117.4
A 15 222 197888 1681.05 581 569 117.4
B 10 246 132350 1185.95 585 569 111.1
B 5 172 51904 461.99 585 569 111.1
B 0 229 15889 137.87 585 569 111.1
C 15 214 221469 1622.68 578 583 136.1
C 14 254 9983 69.05 578 583 136.1
C 0 10 5106 33.23 578 583 136.1
D 12 227 967950 7031.96 562 545 137.6
D 12 235 478750 3476.02 562 545 137.6
D 12 6 216721 1571.36 562 545 137.6

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