ASTROSAT CZTI

Data Quality Report

Orbit 12137

Creation date: 2024-06-27T16:22:54.266863
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/AS1G08_065T01_9000001796_12137cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12137cztM0_level2_quad_clean.evt
Size (bytes)1,276,531,200184,006,080
Size1.2 GB 175.5 MB
Events in quadrant A13,087,1761,129,600
Events in quadrant B11,430,2221,145,688
Events in quadrant C6,101,3181,201,876
Events in quadrant D7,127,1991,159,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481074
B0431083
C0278273
D0305703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13541263319.444650%
B13541142910.553135%
C13541600.443099%
D135411911.410531%

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 15132 13545 2214 2214 14.63% 16.35%
B 15132 13544 912 912 6.03% 6.73%
C 15132 13545 7 7 0.05% 0.05%
D 15132 13545 137 137 0.91% 1.01%

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 63 6781726 22704.88 1482 1450 298.6
A 1 162 186964 621.22 1482 1450 298.6
A 13 248 158237 525.03 1482 1450 298.6
B 10 16 2168138 7533.61 1512 1472 287.6
B 4 239 1725797 5995.57 1512 1472 287.6
B 3 64 574685 1993.09 1512 1472 287.6
C 15 208 88607 245.89 1531 1534 354.1
C 14 234 18560 48.08 1531 1534 354.1
C 3 233 14661 37.07 1531 1534 354.1
D 1 52 776574 2120.12 1523 1483 365.6
D 8 195 226325 615.02 1523 1483 365.6
D 13 104 112784 304.44 1523 1483 365.6

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