ASTROSAT CZTI

Data Quality Report

Orbit 08620

Creation date: 2024-06-27T15:35:03.579290
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/AS1A03_036T01_9000001204_08620cztM0_level2.evt modeM0/AS1A03_036T01_9000001204_08620cztM0_level2_quad_clean.evt
Size (bytes)943,508,160206,712,000
Size899.8 MB 197.1 MB
Events in quadrant A6,295,4471,342,660
Events in quadrant B7,118,9881,354,260
Events in quadrant C6,147,3511,325,713
Events in quadrant D8,046,5571,253,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02912197
B03077298
C02897464
D03441485

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142411741.221824%
B142471871.312557%
C142581040.729415%
D142615924.151182%

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 15269 14287 2 2 0.01% 0.01%
B 15269 14290 21 21 0.14% 0.15%
C 15269 14290 0 0 0.00% 0.00%
D 15269 14286 459 459 3.01% 3.21%

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 8 5 111212 335.98 1596 1555 326.4
A 15 174 22893 65.38 1596 1555 326.4
A 0 226 15004 41.21 1596 1555 326.4
B 0 214 231398 744.67 1605 1563 308.6
B 0 219 190272 611.42 1605 1563 308.6
B 10 246 180232 578.89 1605 1563 308.6
C 14 64 52012 140.01 1556 1555 360.4
C 13 61 11701 28.15 1556 1555 360.4
C 8 222 10674 25.3 1556 1555 360.4
D 10 253 1262289 3107.82 1520 1483 405.7
D 13 105 331658 813.86 1520 1483 405.7
D 13 122 124729 303.79 1520 1483 405.7

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