ASTROSAT CZTI

Data Quality Report

Orbit 12420

Creation date: 2024-06-27T16:27:03.038811
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/AS1A04_201T01_9000001844_12420cztM0_level2.evt modeM0/AS1A04_201T01_9000001844_12420cztM0_level2_quad_clean.evt
Size (bytes)499,783,68091,673,280
Size476.6 MB 87.4 MB
Events in quadrant A4,178,194581,180
Events in quadrant B3,735,984591,425
Events in quadrant C3,114,300589,015
Events in quadrant D3,661,349556,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166753
B0151592
C0136672
D0152202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65711822.769746%
B65711922.921930%
C6571490.745701%
D65711442.191447%

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 7702 6572 77 77 1.00% 1.17%
B 7701 6571 79 79 1.03% 1.20%
C 7702 6572 2 2 0.03% 0.03%
D 7702 6572 93 93 1.21% 1.42%

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 13 251 738369 4420.13 813 796 166.9
A 12 189 107299 638.25 813 796 166.9
A 7 16 59688 352.93 813 796 166.9
B 4 239 321612 2095.44 807 787 153.1
B 3 64 149138 968.94 807 787 153.1
B 11 51 35557 227.1 807 787 153.1
C 15 208 42865 230.63 787 789 182.4
C 13 61 5900 28.01 787 789 182.4
C 5 252 2447 9.09 787 789 182.4
D 1 52 296914 1589.77 782 762 186.3
D 2 14 202094 1080.76 782 762 186.3
D 8 195 133825 714.29 782 762 186.3

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