ASTROSAT CZTI

Data Quality Report

Orbit 29731

Creation date: 2024-06-27T20:07:13.502101
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/AS1A10_007T01_9000004276_29731cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29731cztM0_level2_quad_clean.evt
Size (bytes)671,086,08083,393,280
Size640.0 MB 79.5 MB
Events in quadrant A3,253,321548,027
Events in quadrant B5,222,903552,005
Events in quadrant C4,876,669519,362
Events in quadrant D6,573,489493,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134661
B0193591
C0188751
D0236781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5898651.102068%
B58991532.593660%
C58995529.357518%
D58995479.272758%

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 7233 5898 0 0 0.00% 0.00%
B 7234 5899 4 4 0.06% 0.07%
C 7234 5899 4 4 0.06% 0.07%
D 7234 5899 495 495 6.84% 8.39%

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 16 35728 210.35 832 819 166.0
A 12 194 12141 68.22 832 819 166.0
A 13 254 11721 65.69 832 819 166.0
B 6 159 1790426 11605.02 828 813 154.2
B 15 32 53471 341.47 828 813 154.2
B 0 229 49915 318.41 828 813 154.2
C 3 233 1423433 8002.62 777 787 177.8
C 14 238 222246 1245.74 777 787 177.8
C 14 254 133262 745.19 777 787 177.8
D 8 195 2258489 12209.49 783 766 184.9
D 7 80 1010633 5461.24 783 766 184.9
D 13 104 185748 1000.36 783 766 184.9

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