ASTROSAT CZTI

Data Quality Report

Orbit 27649

Creation date: 2024-06-27T19:42:34.917002
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/AS1T03_257T01_9000003976_27649cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27649cztM0_level2_quad_clean.evt
Size (bytes)574,945,92076,904,640
Size548.3 MB 73.3 MB
Events in quadrant A3,413,028488,335
Events in quadrant B3,680,856502,182
Events in quadrant C3,372,799471,435
Events in quadrant D6,491,128399,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142560
B0149690
C0140130
D0238760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704921.372315%
B67041362.028640%
C67041161.730310%
D6704101715.170048%

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 7759 6704 1 1 0.01% 0.01%
B 7759 6704 13 13 0.17% 0.19%
C 7759 6704 1 1 0.01% 0.01%
D 7759 6704 631 631 8.13% 9.41%

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 6 16 100221 579.54 856 839 171.5
A 13 254 10526 56.49 856 839 171.5
A 8 192 9631 51.27 856 839 171.5
B 5 255 157590 961.62 858 836 163.0
B 10 245 115899 705.87 858 836 163.0
B 15 32 23529 139.21 858 836 163.0
C 14 238 132092 673.64 825 832 194.9
C 2 16 26687 132.69 825 832 194.9
C 13 61 5513 24.02 825 832 194.9
D 1 52 3239428 18195.73 749 729 178.0
D 11 176 161402 902.7 749 729 178.0
D 12 233 86898 484.12 749 729 178.0

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