ASTROSAT CZTI

Data Quality Report

Orbit 15136

Creation date: 2024-06-27T17:04:12.998997
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_218T03_9000002232_15136cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15136cztM0_level2_quad_clean.evt
Size (bytes)501,523,20098,213,760
Size478.3 MB 93.7 MB
Events in quadrant A3,615,728622,970
Events in quadrant B3,771,226637,695
Events in quadrant C3,719,800625,774
Events in quadrant D3,604,217597,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152273
B0156812
C0152692
D0154152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7033751.066401%
B70331311.862648%
C7033440.625622%
D7033991.407650%

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 9234 7035 11 11 0.12% 0.16%
B 9234 7035 25 25 0.27% 0.36%
C 9234 7035 0 0 0.00% 0.00%
D 9234 7035 57 57 0.62% 0.81%

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 12 189 117708 646.65 888 869 180.7
A 13 248 40943 221.79 888 869 180.7
A 1 162 15896 83.17 888 869 180.7
B 3 64 200811 1189.02 891 869 168.2
B 0 230 21380 121.98 891 869 168.2
B 0 197 20138 114.59 891 869 168.2
C 3 233 317888 1568.09 872 877 202.2
C 13 61 6078 25.73 872 877 202.2
C 7 247 2078 5.94 872 877 202.2
D 13 172 90803 427.33 867 842 210.5
D 13 122 65077 305.13 867 842 210.5
D 2 120 38085 176.91 867 842 210.5

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