ASTROSAT CZTI

Data Quality Report

Orbit 25145

Creation date: 2024-06-27T19:14:22.302531
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/AS1A07_018T07_9000003680_25145cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25145cztM0_level2_quad_clean.evt
Size (bytes)476,032,320104,912,640
Size454.0 MB 100.1 MB
Events in quadrant A3,230,986685,864
Events in quadrant B3,404,865700,873
Events in quadrant C3,570,065673,731
Events in quadrant D3,761,084655,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138220
B0143270
C0146690
D0154540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622400.604047%
B6622811.223195%
C66221291.948052%
D66221161.751737%

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 7573 6623 0 0 0.00% 0.00%
B 7573 6622 6 6 0.08% 0.09%
C 7573 6623 1 1 0.01% 0.02%
D 7573 6623 51 51 0.67% 0.77%

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 13 254 10306 56.58 838 820 167.7
A 3 137 7782 41.52 838 820 167.7
A 0 226 7114 37.54 838 820 167.7
B 0 229 72443 445.75 840 818 160.7
B 3 64 33484 203.29 840 818 160.7
B 12 111 19437 115.87 840 818 160.7
C 7 247 222829 1152.19 816 822 192.7
C 14 238 131869 680.12 816 822 192.7
C 2 16 20274 100.95 816 822 192.7
D 1 52 215339 1080.86 819 795 198.5
D 2 244 150781 755.62 819 795 198.5
D 8 195 135488 678.57 819 795 198.5

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