ASTROSAT CZTI

Data Quality Report

Orbit 12163

Creation date: 2024-06-27T16:23:15.498717
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_065T01_9000001796_12163cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12163cztM0_level2_quad_clean.evt
Size (bytes)651,954,240113,483,520
Size621.8 MB 108.2 MB
Events in quadrant A4,091,754737,969
Events in quadrant B6,211,716707,198
Events in quadrant C3,772,212728,307
Events in quadrant D5,118,128698,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177203
B0239852
C0170532
D0210462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81271161.427341%
B812788510.889627%
C8127690.849022%
D81272703.322259%

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 8573 8130 4 4 0.05% 0.05%
B 8573 8130 427 427 4.98% 5.25%
C 8573 8130 3 3 0.03% 0.04%
D 8573 8130 125 125 1.46% 1.54%

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 15 101492 503.54 980 958 199.7
A 1 162 70120 346.41 980 958 199.7
A 1 178 31021 150.58 980 958 199.7
B 4 239 1467632 8080.17 939 914 181.5
B 0 85 524898 2886.63 939 914 181.5
B 15 204 132296 723.78 939 914 181.5
C 15 208 29931 130.06 957 960 222.8
C 13 61 7056 27.37 957 960 222.8
C 13 250 5706 21.31 957 960 222.8
D 1 52 921060 4018.69 942 913 229.0
D 13 249 191956 834.37 942 913 229.0
D 10 199 138391 600.43 942 913 229.0

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