ASTROSAT CZTI

Data Quality Report

Orbit 03882

Creation date: 2024-06-27T14:34:45.492213
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/AS1G05_083T01_9000000494_03882cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03882cztM0_level2_quad_clean.evt
Size (bytes)477,688,32099,184,320
Size455.6 MB 94.6 MB
Events in quadrant A3,392,070632,326
Events in quadrant B3,575,181633,938
Events in quadrant C3,602,880624,823
Events in quadrant D3,404,272608,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153793
B0154732
C0159492
D0157042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72432273.134060%
B72431692.333287%
C72431902.623222%
D72431622.236642%

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 7678 7243 14 14 0.18% 0.19%
B 7678 7243 15 15 0.20% 0.21%
C 7678 7244 88 88 1.15% 1.21%
D 7678 7243 26 26 0.34% 0.36%

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 0 118 146310 877.36 810 791 165.9
A 0 50 55976 332.72 810 791 165.9
A 8 15 34436 202.85 810 791 165.9
B 15 204 229682 1453.31 819 798 157.5
B 4 81 55056 344.51 819 798 157.5
B 15 54 29951 185.11 819 798 157.5
C 2 53 371256 2042.09 783 785 181.4
C 14 234 99594 544.65 783 785 181.4
C 14 67 34134 183.82 783 785 181.4
D 14 34 168905 876.03 786 760 191.9
D 13 248 68253 351.64 786 760 191.9
D 13 239 47038 241.11 786 760 191.9

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
Veto Counter