ASTROSAT CZTI

Data Quality Report

Orbit 04763

Creation date: 2024-06-27T14:46:38.581592
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/AS1G05_212T01_9000000600_04763cztM0_level2.evt modeM0/AS1G05_212T01_9000000600_04763cztM0_level2_quad_clean.evt
Size (bytes)476,930,88077,224,320
Size454.8 MB 73.6 MB
Events in quadrant A2,848,753485,670
Events in quadrant B3,300,861487,319
Events in quadrant C4,588,744464,634
Events in quadrant D3,276,735459,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129383
B0139672
C0177992
D0142072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316260.411653%
B6316891.409120%
C63163585.668144%
D6316380.601647%

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 7571 6317 0 0 0.00% 0.00%
B 7571 6317 35 35 0.46% 0.55%
C 7571 6317 304 304 4.02% 4.81%
D 7571 6317 21 21 0.28% 0.33%

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 0 50 11784 74.47 733 716 148.6
A 15 174 9392 58.38 733 716 148.6
A 0 226 7595 46.29 733 716 148.6
B 10 16 205532 1448.49 742 724 141.4
B 14 167 176751 1244.94 742 724 141.4
B 4 80 22749 155.77 742 724 141.4
C 14 48 1788381 11051.19 703 707 161.8
C 1 16 29446 177.66 703 707 161.8
C 12 4 13094 76.57 703 707 161.8
D 13 235 319751 1880.45 707 685 169.7
D 2 136 167846 985.18 707 685 169.7
D 2 234 42696 247.6 707 685 169.7

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