ASTROSAT CZTI

Data Quality Report

Orbit 12461

Creation date: 2024-06-27T16:27:42.127486
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/AS1A04_174T01_9000001850_12461cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12461cztM0_level2_quad_clean.evt
Size (bytes)646,591,68094,734,720
Size616.6 MB 90.3 MB
Events in quadrant A8,379,462543,082
Events in quadrant B3,999,196651,670
Events in quadrant C3,033,882646,379
Events in quadrant D3,752,181596,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292823
B0158842
C0128312
D0152802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6167180529.268688%
B61672253.648451%
C6167120.194584%
D6167981.589103%

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 7497 6167 1589 1589 21.20% 25.77%
B 7498 6169 122 122 1.63% 1.98%
C 7498 6169 0 0 0.00% 0.00%
D 7498 6168 87 87 1.16% 1.41%

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 23 3268212 22093.41 725 713 147.9
A 13 251 1740767 11765.49 725 713 147.9
A 0 226 247073 1665.78 725 713 147.9
B 4 239 700222 4716.6 792 776 148.3
B 0 219 72500 483.66 792 776 148.3
B 11 51 39393 260.41 792 776 148.3
C 13 61 5741 27.68 777 785 179.0
C 14 234 4544 20.99 777 785 179.0
C 12 4 3561 15.5 777 785 179.0
D 1 52 648874 3543.09 759 741 182.9
D 13 104 111678 606.45 759 741 182.9
D 13 249 57822 312.04 759 741 182.9

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