ASTROSAT CZTI

Data Quality Report

Orbit 31700

Creation date: 2024-06-27T20:31:41.336611
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/AS1T04_034T01_9000004632_31700cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31700cztM0_level2_quad_clean.evt
Size (bytes)610,784,64087,802,560
Size582.5 MB 83.7 MB
Events in quadrant A3,690,286566,645
Events in quadrant B6,697,842571,920
Events in quadrant C3,915,041561,638
Events in quadrant D3,801,572552,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150021
B0238281
C0155401
D0150851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58031652.843357%
B5803124621.471653%
C58033225.548854%
D5803991.706014%

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 7148 5804 84 84 1.18% 1.45%
B 7148 5804 958 958 13.40% 16.51%
C 7148 5804 76 76 1.06% 1.31%
D 7148 5804 30 30 0.42% 0.52%

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 13 401774 2418.6 841 829 165.8
A 7 16 22161 128.68 841 829 165.8
A 13 254 11139 62.19 841 829 165.8
B 4 80 2203207 16181.04 726 712 136.1
B 6 159 1492448 10959.31 726 712 136.1
B 5 172 76561 557.24 726 712 136.1
C 0 10 207582 1102.24 817 828 187.6
C 3 233 198204 1052.24 817 828 187.6
C 14 238 133910 709.48 817 828 187.6
D 8 195 463819 2360.2 832 816 196.2
D 12 227 66874 336.73 832 816 196.2
D 12 233 50307 252.28 832 816 196.2

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