ASTROSAT CZTI

Data Quality Report

Orbit 09452

Creation date: 2024-06-27T15:46:17.746124
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/AS1T01_177T01_9000001344_09452cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09452cztM0_level2_quad_clean.evt
Size (bytes)434,649,60090,737,280
Size414.5 MB 86.5 MB
Events in quadrant A3,308,622593,295
Events in quadrant B3,177,028587,810
Events in quadrant C2,975,637570,221
Events in quadrant D3,279,873562,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137982
B0134671
C0129911
D0138411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214951.528806%
B6214901.448342%
C6214651.046025%
D6214971.560991%

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 7474 6215 1 1 0.01% 0.02%
B 7474 6215 2 2 0.03% 0.03%
C 7474 6215 0 0 0.00% 0.00%
D 7474 6215 19 19 0.25% 0.31%

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 182465 1117.51 796 781 162.6
A 14 111 22632 134.4 796 781 162.6
A 1 162 20418 120.78 796 781 162.6
B 0 214 56619 376.54 785 767 148.3
B 0 219 27267 178.66 785 767 148.3
B 0 229 20524 133.2 785 767 148.3
C 14 67 13907 74.69 758 760 176.0
C 13 61 5889 29.14 758 760 176.0
C 9 68 4405 20.71 758 760 176.0
D 1 52 161947 810.54 762 744 198.9
D 13 104 134872 674.41 762 744 198.9
D 7 71 45166 223.36 762 744 198.9

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