ASTROSAT CZTI

Data Quality Report

Orbit 37707

Creation date: 2024-06-27T21:43:23.685506
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_075T01_9000005342_37707cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37707cztM0_level2_quad_clean.evt
Size (bytes)463,377,60063,230,400
Size441.9 MB 60.3 MB
Events in quadrant A4,272,389385,421
Events in quadrant B2,957,961392,215
Events in quadrant C3,039,790389,492
Events in quadrant D3,401,057373,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163863
B0120452
C0122232
D0136562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5348881.645475%
B5348751.402393%
C5348330.617053%
D53481031.925954%

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 7259 5348 31 31 0.43% 0.58%
B 7259 5347 55 55 0.76% 1.03%
C 7259 5347 31 31 0.43% 0.58%
D 7259 5347 84 84 1.16% 1.57%

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 1174163 8781.67 670 659 133.6
A 10 83 323949 2419.27 670 659 133.6
A 9 143 93438 694.29 670 659 133.6
B 5 172 255338 2038.1 663 645 125.0
B 5 200 41680 328.37 663 645 125.0
B 0 230 33178 260.33 663 645 125.0
C 15 214 244400 1632.02 653 656 149.4
C 0 10 122801 817.83 653 656 149.4
C 14 254 111004 738.85 653 656 149.4
D 2 250 334432 2099.03 652 635 159.0
D 12 227 153571 961.71 652 635 159.0
D 2 153 101548 634.57 652 635 159.0

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