ASTROSAT CZTI

Data Quality Report

Orbit 20220118_A11_097T08_9000004874_level2

Creation date: 2022-01-21T17:33:19.394233
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_097T08_9000004874cztM0_level2_bc.evt modeM0/AS1A11_097T08_9000004874cztM0_level2_quad_clean.evt
Size (bytes)4,496,192,6401,204,392,960
Size4.2 GB 1.1 GB
Events in quadrant A20,057,1467,644,901
Events in quadrant B30,489,2957,753,423
Events in quadrant C32,338,8687,499,000
Events in quadrant D46,816,5537,060,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01927250
B02349920
C02306620
D02882180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019420
B019420
C019420
D019420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A951771120.117675%
B9517732673.432552%
C9517718961.992078%
D9517745004.728033%

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 151085 95193 3 3 0.00% 0.00%
B 151085 95180 198 198 0.13% 0.21%
C 151085 95181 244 244 0.16% 0.26%
D 151085 95182 932 932 0.62% 0.98%

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 229908 205.25 5014 4942 1096.1
A 13 6 218604 194.93 5014 4942 1096.1
A 15 169 190049 168.88 5014 4942 1096.1
B 5 172 3511258 3571.71 5016 4915 981.7
B 5 31 2765658 2812.21 5016 4915 981.7
B 5 15 1257350 1275.78 5016 4915 981.7
C 0 10 7750900 7082.62 4848 4812 1093.7
C 15 214 3891668 3553.94 4848 4812 1093.7
C 14 254 765804 695.81 4848 4812 1093.7
D 8 195 11363170 9422.93 4809 4660 1205.4
D 2 250 2924422 2422.21 4809 4660 1205.4
D 10 118 2781189 2303.39 4809 4660 1205.4

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