ASTROSAT CZTI

Data Quality Report

Orbit 07180

Creation date: 2024-06-27T15:16:44.549519
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/AS1A02_176T01_9000000980_07180cztM0_level2.evt modeM0/AS1A02_176T01_9000000980_07180cztM0_level2_quad_clean.evt
Size (bytes)332,176,32089,588,160
Size316.8 MB 85.4 MB
Events in quadrant A2,450,912589,487
Events in quadrant B2,422,173616,656
Events in quadrant C2,186,574598,471
Events in quadrant D2,668,420567,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105782
B0104171
C098941
D0111201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48632545.223113%
B4863360.740284%
C4863130.267325%
D4863360.740284%

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 6098 4864 2 2 0.03% 0.04%
B 6098 4864 19 19 0.31% 0.39%
C 6098 4864 0 0 0.00% 0.00%
D 6098 4864 17 17 0.28% 0.35%

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 14 111 256935 2254.12 561 551 113.7
A 14 238 17429 148.39 561 551 113.7
A 8 15 12620 106.11 561 551 113.7
B 4 81 98551 907.63 574 561 108.0
B 0 214 74836 687.97 574 561 108.0
B 0 219 16348 146.23 574 561 108.0
C 8 128 5100 35.05 558 558 129.6
C 13 61 4214 28.21 558 558 129.6
C 8 112 2508 15.05 558 558 129.6
D 8 195 233139 1736.87 553 535 133.9
D 2 216 129310 961.57 553 535 133.9
D 2 14 48707 359.7 553 535 133.9

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