ASTROSAT CZTI

Data Quality Report

Orbit 23159

Creation date: 2024-06-27T18:50:40.746226
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/AS1A08_009T01_9000003422_23159cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23159cztM0_level2_quad_clean.evt
Size (bytes)487,681,920105,629,760
Size465.1 MB 100.7 MB
Events in quadrant A3,224,905695,069
Events in quadrant B3,435,497716,227
Events in quadrant C3,824,734695,208
Events in quadrant D3,871,278667,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136152
B0142012
C0152122
D0157843

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6085731.199671%
B60851502.465078%
C60852383.911257%
D60841993.270874%

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 7440 6086 0 0 0.00% 0.00%
B 7440 6086 45 45 0.60% 0.74%
C 7440 6086 38 38 0.51% 0.62%
D 7439 6084 116 116 1.56% 1.91%

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 4 2 14770 84.66 831 818 164.8
A 13 254 8920 49.16 831 818 164.8
A 0 226 7272 39.16 831 818 164.8
B 10 247 138661 906.4 830 811 152.1
B 0 190 45238 292.12 830 811 152.1
B 12 111 16864 105.55 830 811 152.1
C 8 208 356350 1914.48 813 823 185.7
C 14 238 131455 703.44 813 823 185.7
C 0 10 127835 683.95 813 823 185.7
D 1 52 519646 2675.24 816 796 193.9
D 7 238 150437 771.56 816 796 193.9
D 13 153 32875 165.4 816 796 193.9

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