ASTROSAT CZTI

Data Quality Report

Orbit 36660

Creation date: 2024-06-27T21:29:53.246100
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/AS1A11_049T05_9000005232_36660cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36660cztM0_level2_quad_clean.evt
Size (bytes)1,286,219,520184,080,960
Size1.2 GB 175.6 MB
Events in quadrant A7,739,0341,160,589
Events in quadrant B8,255,6371,159,866
Events in quadrant C8,790,3061,120,006
Events in quadrant D13,104,0671,045,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330785
B0344544
C0360454
D0496174

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15779520.329552%
B157791390.880918%
C157792881.825211%
D157799966.312187%

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 19898 15782 14 14 0.07% 0.09%
B 19898 15782 83 83 0.42% 0.53%
C 19898 15782 203 203 1.02% 1.29%
D 19898 15782 829 829 4.17% 5.25%

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 10 83 522943 1413.03 1829 1793 368.8
A 9 143 91294 242.67 1829 1793 368.8
A 13 254 27113 68.65 1829 1793 368.8
B 5 255 563517 1598.14 1820 1771 351.5
B 0 221 123557 346.48 1820 1771 351.5
B 4 171 71678 198.88 1820 1771 351.5
C 15 214 713385 1739.0 1757 1763 409.2
C 0 10 615939 1500.87 1757 1763 409.2
C 14 254 577271 1406.37 1757 1763 409.2
D 12 235 1916032 4509.07 1730 1680 424.6
D 7 223 826166 1942.0 1730 1680 424.6
D 13 249 797546 1874.59 1730 1680 424.6

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