ASTROSAT CZTI

Data Quality Report

Orbit 37186

Creation date: 2024-06-27T21:36:39.222820
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/AS1A11_079T01_9000005284_37186cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37186cztM0_level2_quad_clean.evt
Size (bytes)440,732,16063,512,640
Size420.3 MB 60.6 MB
Events in quadrant A2,959,906397,280
Events in quadrant B3,069,910398,075
Events in quadrant C3,221,650388,688
Events in quadrant D3,729,469360,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118623
B0122912
C0125222
D0144812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5400180.333333%
B54001082.000000%
C54001222.259259%
D54002043.777778%

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 9166 5402 7 7 0.08% 0.13%
B 9166 5402 58 58 0.63% 1.07%
C 9166 5402 105 105 1.15% 1.94%
D 9166 5402 183 183 2.00% 3.39%

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 10 83 258411 1893.82 688 677 136.1
A 9 143 21516 153.12 688 677 136.1
A 13 248 8811 59.77 688 677 136.1
B 5 172 232314 1809.29 674 658 128.0
B 5 184 71094 550.12 674 658 128.0
B 5 200 52098 401.76 674 658 128.0
C 15 214 231184 1515.26 653 657 152.1
C 0 10 201326 1319.0 653 657 152.1
C 14 254 167753 1098.32 653 657 152.1
D 1 52 842180 5374.82 650 634 156.6
D 13 171 100457 637.55 650 634 156.6
D 2 249 96192 610.31 650 634 156.6

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