ASTROSAT CZTI

Data Quality Report

Orbit 48235

Creation date: 2024-09-05T15:47:49.267203
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_029T01_9000006422_48235cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48235cztM0_level2_quad_clean.evt
Size (bytes)597,378,240128,088,000
Size569.7 MB 122.2 MB
Events in quadrant A8,231,326851,896
Events in quadrant B4,964,502866,408
Events in quadrant C3,618,575839,385
Events in quadrant D4,675,517761,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298620
B0201842
C0167440
D0195940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80462182.709421%
B80462543.156848%
C8046180.223714%
D80461201.491424%

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 8061 8047 15 15 0.19% 0.19%
B 8062 8048 155 155 1.92% 1.93%
C 8061 8047 6 6 0.07% 0.07%
D 8061 8047 91 91 1.13% 1.13%

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 4581164 24018.95 910 890 190.7
A 13 248 62155 321.27 910 890 190.7
A 3 14 33519 171.11 910 890 190.7
B 5 255 648507 3561.69 910 880 181.8
B 4 21 252242 1382.39 910 880 181.8
B 0 200 230147 1260.88 910 880 181.8
C 12 2 43069 195.19 904 908 216.0
C 14 254 41802 189.33 904 908 216.0
C 13 61 6118 24.12 904 908 216.0
D 2 165 779472 3412.36 898 869 228.2
D 12 233 145467 633.72 898 869 228.2
D 2 249 109331 475.35 898 869 228.2

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