ASTROSAT CZTI

Data Quality Report

Orbit 31946

Creation date: 2024-06-27T20:34:27.234335
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/AS1C06_002T04_9000004660_31946cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31946cztM0_level2_quad_clean.evt
Size (bytes)728,320,320127,673,280
Size694.6 MB 121.8 MB
Events in quadrant A3,325,351952,955
Events in quadrant B8,771,530777,109
Events in quadrant C4,051,985864,463
Events in quadrant D5,502,685851,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136131
B0300841
C0160611
D0208562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60151071.778886%
B6015216235.943475%
C60152403.990025%
D60154186.949293%

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 7280 6015 0 0 0.00% 0.00%
B 7279 6014 1638 1638 22.50% 27.24%
C 7280 6015 43 43 0.59% 0.71%
D 7280 6015 331 331 4.55% 5.50%

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 12 96 123513 756.28 826 813 162.2
A 13 6 13771 79.87 826 813 162.2
A 13 254 11825 67.87 826 813 162.2
B 4 80 3921568 30917.75 689 676 126.8
B 6 159 1414383 11147.63 689 676 126.8
B 12 18 343783 2705.53 689 676 126.8
C 3 233 582409 3389.24 754 759 171.6
C 0 10 331381 1926.51 754 759 171.6
C 14 238 138089 800.21 754 759 171.6
D 8 195 1065929 5886.96 774 754 180.9
D 12 33 887223 4899.3 774 754 180.9
D 13 249 233291 1285.18 774 754 180.9

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter