ASTROSAT CZTI

Data Quality Report

Orbit 17789

Creation date: 2024-06-27T17:40:55.299169
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/AS1A05_015T01_9000002650_17789cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17789cztM0_level2_quad_clean.evt
Size (bytes)472,150,080109,169,280
Size450.3 MB 104.1 MB
Events in quadrant A3,140,067721,891
Events in quadrant B3,234,738752,474
Events in quadrant C3,233,535710,205
Events in quadrant D4,257,449676,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134002
B0136472
C0135813
D0169212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375420.658824%
B6375360.564706%
C6374731.145278%
D63741772.776906%

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 7745 6376 7 7 0.09% 0.11%
B 7745 6376 0 0 0.00% 0.00%
C 7744 6375 0 0 0.00% 0.00%
D 7744 6375 156 156 2.01% 2.45%

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 15 174 36369 219.32 807 795 162.2
A 0 226 7296 40.08 807 795 162.2
A 12 194 5725 30.39 807 795 162.2
B 12 111 17720 111.75 819 802 151.4
B 11 111 15140 94.71 819 802 151.4
B 14 111 13131 81.44 819 802 151.4
C 14 238 122485 671.89 783 791 181.1
C 3 233 32143 173.1 783 791 181.1
C 5 218 19844 105.2 783 791 181.1
D 7 238 1228339 6618.29 771 754 185.5
D 10 70 45568 241.61 771 754 185.5
D 12 110 27017 141.59 771 754 185.5

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