ASTROSAT CZTI

Data Quality Report

Orbit 11131

Creation date: 2024-06-27T16:08:42.374692
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_071T02_9000001620_11131cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11131cztM0_level2_quad_clean.evt
Size (bytes)555,232,32069,163,200
Size529.5 MB 66.0 MB
Events in quadrant A4,135,555416,135
Events in quadrant B4,108,715424,995
Events in quadrant C3,091,030420,450
Events in quadrant D5,043,715383,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162783
B0162722
C0132662
D0193372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64401432.220497%
B64402433.773292%
C6440110.170807%
D64404486.956522%

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 7780 6441 91 91 1.17% 1.41%
B 7780 6441 97 97 1.25% 1.51%
C 7780 6441 2 2 0.03% 0.03%
D 7780 6441 377 377 4.85% 5.85%

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 8 5 848461 5180.22 808 792 163.6
A 8 15 135232 821.58 808 792 163.6
A 11 29 20059 117.74 808 792 163.6
B 4 239 521074 3367.19 814 796 154.5
B 10 16 155154 998.99 814 796 154.5
B 15 204 106281 682.69 814 796 154.5
C 9 54 15542 80.76 788 794 182.6
C 13 61 5738 27.07 788 794 182.6
C 12 4 2997 12.06 788 794 182.6
D 10 253 817321 4541.96 750 731 179.8
D 11 129 260470 1444.69 750 731 179.8
D 5 222 239578 1328.49 750 731 179.8

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