ASTROSAT CZTI

Data Quality Report

Orbit 09145

Creation date: 2024-06-27T15:41:53.975326
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/AS1C02_042T01_9000001278_09145cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09145cztM0_level2_quad_clean.evt
Size (bytes)341,403,84078,134,400
Size325.6 MB 74.5 MB
Events in quadrant A2,647,119497,357
Events in quadrant B2,433,079520,929
Events in quadrant C2,287,593516,244
Events in quadrant D2,628,467479,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139312854
B0131082394
C0127002356
D0144853129

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211
B0212
C0212
D0222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012634
B012618
C012622
D012524

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4975200.402010%
B5069310.611560%
C5029100.198847%
D4962951.914551%

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 7416 5819 6 6 0.08% 0.10%
B 7416 5894 4 4 0.05% 0.07%
C 7415 5834 0 0 0.00% 0.00%
D 7416 5796 81 81 1.09% 1.40%

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 354387 3016.85 574 562 117.3
A 13 251 46825 394.46 574 562 117.3
A 1 162 18572 153.56 574 562 117.3
B 0 219 30708 268.71 596 583 112.1
B 4 48 24997 217.77 596 583 112.1
B 4 80 24350 212.0 596 583 112.1
C 4 239 35898 265.69 576 579 132.9
C 13 61 4390 28.67 576 579 132.9
C 9 68 3021 18.37 576 579 132.9
D 1 52 176807 1296.13 557 539 136.0
D 2 14 170795 1251.92 557 539 136.0
D 7 71 65778 479.71 557 539 136.0

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