ASTROSAT CZTI

Data Quality Report

Orbit 43811

Creation date: 2024-06-27T22:56:04.345639
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/AS1A13_018T01_9000005906_43811cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43811cztM0_level2_quad_clean.evt
Size (bytes)1,074,867,84090,411,840
Size1.0 GB 86.2 MB
Events in quadrant A10,073,039596,751
Events in quadrant B5,174,888803,681
Events in quadrant C8,161,681661,601
Events in quadrant D15,816,839169,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352451
B0202061
C0293211
D0518231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7271225731.041122%
B72725096.999450%
C7272145319.980748%
D7272581379.936744%

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 7316 7272 1657 1657 22.65% 22.79%
B 7316 7272 244 244 3.34% 3.36%
C 7317 7273 1465 1465 20.02% 20.14%
D 7316 7271 5077 5077 69.40% 69.83%

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 15 223 5179407 31932.46 774 758 162.2
A 10 83 899868 5544.07 774 758 162.2
A 14 254 388669 2391.93 774 758 162.2
B 0 200 847914 4953.47 852 828 171.0
B 5 235 495136 2890.55 852 828 171.0
B 0 183 122450 711.2 852 828 171.0
C 15 174 4012628 21406.43 793 799 187.4
C 15 190 243020 1292.45 793 799 187.4
C 14 254 237900 1265.13 793 799 187.4
D 10 102 11527032 84413.61 524 506 136.5
D 1 52 603470 4415.76 524 506 136.5
D 5 235 282870 2067.87 524 506 136.5

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