ASTROSAT CZTI

Data Quality Report

Orbit 37654

Creation date: 2024-06-27T21:42:42.124858
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_37654cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37654cztM0_level2_quad_clean.evt
Size (bytes)460,471,68070,675,200
Size439.1 MB 67.4 MB
Events in quadrant A3,116,558437,057
Events in quadrant B2,901,046454,594
Events in quadrant C2,946,518459,109
Events in quadrant D4,583,630380,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129793
B0124292
C0122322
D0177142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5848240.410397%
B5848250.427497%
C5848260.444596%
D584871112.158003%

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 9732 5850 18 18 0.18% 0.31%
B 9732 5848 7 7 0.07% 0.12%
C 9732 5848 17 17 0.17% 0.29%
D 9732 5848 717 717 7.37% 12.26%

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 317319 2356.35 666 652 134.4
A 15 222 96869 715.96 666 652 134.4
A 9 143 79018 583.13 666 652 134.4
B 4 232 67134 520.43 669 652 127.7
B 5 200 48304 373.03 669 652 127.7
B 0 230 39347 302.91 669 652 127.7
C 15 214 266499 1759.67 656 661 151.1
C 0 10 103736 682.29 656 661 151.1
C 15 159 9869 60.95 656 661 151.1
D 12 227 1752916 11720.99 612 593 149.5
D 2 249 303238 2024.34 612 593 149.5
D 10 199 40357 265.97 612 593 149.5

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