ASTROSAT CZTI

Data Quality Report

Orbit 17581

Creation date: 2024-06-27T17:38:14.620796
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/AS1A05_056T01_9000002604_17581cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17581cztM0_level2_quad_clean.evt
Size (bytes)472,101,12091,699,200
Size450.2 MB 87.5 MB
Events in quadrant A3,447,327586,653
Events in quadrant B3,155,673592,098
Events in quadrant C3,351,321564,115
Events in quadrant D3,884,789563,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146672
B0137043
C0138572
D0160732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752921.362559%
B6751210.311065%
C6751410.607317%
D67512333.451341%

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 7697 6753 60 60 0.78% 0.89%
B 7696 6752 1 1 0.01% 0.01%
C 7696 6752 0 0 0.00% 0.00%
D 7696 6752 200 200 2.60% 2.96%

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 14 237 372910 2294.49 797 779 162.2
A 0 226 6737 36.74 797 779 162.2
A 3 137 6005 32.22 797 779 162.2
B 12 111 19031 118.73 802 781 153.7
B 11 111 16456 101.97 802 781 153.7
B 14 111 14339 88.2 802 781 153.7
C 3 233 214252 1173.95 771 777 181.8
C 14 238 119894 655.05 771 777 181.8
C 5 218 6183 29.73 771 777 181.8
D 5 222 784022 4157.63 768 747 188.4
D 4 239 98156 517.05 768 747 188.4
D 13 189 84906 446.72 768 747 188.4

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