ASTROSAT CZTI

Data Quality Report

Orbit 09855

Creation date: 2024-06-27T15:51:57.207901
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/AS1G07_031T01_9000001402_09855cztM0_level2.evt modeM0/AS1G07_031T01_9000001402_09855cztM0_level2_quad_clean.evt
Size (bytes)413,735,04089,769,600
Size394.6 MB 85.6 MB
Events in quadrant A2,738,141577,927
Events in quadrant B3,031,013591,815
Events in quadrant C2,965,380582,116
Events in quadrant D3,401,178562,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012616
B01268
C01268
D01268

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0200
C0212
D0213

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012813789
B013690840
C013478812
D015046920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5786130.224680%
B5778490.848044%
C5797430.741763%
D57881883.248100%

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 7386 6107 2 2 0.03% 0.03%
B 7386 6112 15 15 0.20% 0.25%
C 7386 6116 19 19 0.26% 0.31%
D 7386 6107 119 119 1.61% 1.95%

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 15 174 29548 203.54 698 684 141.8
A 13 251 10543 69.52 698 684 141.8
A 0 226 6286 39.5 698 684 141.8
B 4 81 194626 1452.25 706 688 133.5
B 0 214 44202 325.84 706 688 133.5
B 12 111 14668 104.69 706 688 133.5
C 4 254 250209 1551.99 691 696 160.8
C 0 207 13412 79.09 691 696 160.8
C 13 61 5211 28.08 691 696 160.8
D 10 253 262000 1557.56 672 656 167.8
D 8 195 151583 899.5 672 656 167.8
D 12 233 124919 740.58 672 656 167.8

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