ASTROSAT CZTI

Data Quality Report

Orbit 13437

Creation date: 2024-06-27T16:40:48.309541
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/AS1A04_103T01_9000001988_13437cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13437cztM0_level2_quad_clean.evt
Size (bytes)504,129,600109,969,920
Size480.8 MB 104.9 MB
Events in quadrant A3,650,171701,781
Events in quadrant B3,765,100718,196
Events in quadrant C3,664,802695,664
Events in quadrant D3,651,252665,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163583
B0165022
C0162752
D0166192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7894430.544718%
B7894760.962757%
C7894390.494046%
D7894230.291361%

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 8530 7896 3 3 0.04% 0.04%
B 8530 7896 4 4 0.05% 0.05%
C 8530 7897 1 1 0.01% 0.01%
D 8530 7897 4 4 0.05% 0.05%

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 69 23682 120.02 933 911 189.7
A 1 162 22115 111.76 933 911 189.7
A 0 226 8121 38.0 933 911 189.7
B 0 230 32898 175.41 942 917 182.3
B 0 214 22620 119.04 942 917 182.3
B 12 111 21705 114.02 942 917 182.3
C 3 233 73094 338.72 914 917 213.1
C 8 128 12820 55.86 914 917 213.1
C 14 234 8548 35.81 914 917 213.1
D 8 195 73120 329.67 901 874 219.1
D 2 136 58747 264.08 901 874 219.1
D 12 110 54398 244.24 901 874 219.1

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